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question_answer1)
Which of the following is a one dimensional motion?
A)
Landing of an aircraft done
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B)
Earth revolving around the sun done
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C)
Motion of wheels of a moving train done
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D)
Train running on a straight track done
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question_answer2)
Which of the following can be zero, when a particle is in motion for some time?
A)
Distance done
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B)
Displacement done
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C)
Speed done
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D)
None of these done
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question_answer3)
Speed is in general ___ in magnitude than that of the velocity.
A)
equal done
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B)
greater or equal done
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C)
smaller done
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D)
none of these done
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question_answer4)
Area under velocity-time curve over a given interval of time represents
A)
acceleration done
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B)
momentum done
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C)
velocity done
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D)
displacement done
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question_answer5)
The slope of velocity-time graph for motion with uniform velocity is equal to
A)
final velocity done
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B)
initial velocity done
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C)
zero done
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D)
none of these done
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question_answer6)
The ratio of the numerical values of the average velocity and average speed of a body is
A)
unity done
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B)
unity or less done
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C)
(e) unity or more done
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D)
less than unity done
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question_answer7)
The slope of the tangent drawn on position-time graph at any instant is equal to the instantaneous
A)
acceleration done
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B)
force done
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C)
velocity done
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D)
momentum done
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question_answer8)
Which of the following is the correct definition for Average speed?
A)
Average speed \[=\frac{\text{total}\,\,\text{displacement}}{\text{total}\,\,\text{time}}\] done
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B)
Average speed \[=\frac{\text{total}\,\,\text{path}\,\,\text{length}}{\text{total}\,\,\text{time}}\] done
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C)
Average speed \[=\frac{\text{change}\,\,\text{in}\,\,\text{speed}}{\text{total}\,\,\text{time}}\] done
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D)
Average speed \[=\frac{\text{sum}\,\,\text{of}\,\,\text{all}\,\,\text{the}\,\,\text{speed}}{\text{total}\,\,\text{time}}\] done
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question_answer9)
What is the numerical ratio of velocity to speed of an object?
A)
Always equal to one done
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B)
Always less than one done
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C)
Always greater than one done
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D)
Either less than or equal to one. done
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question_answer10)
The acceleration of a moving body can be found from
A)
area under velocity - time graph done
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B)
area under distance -time graph done
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C)
slope of the velocity- time graph done
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D)
slope of distance-time graph done
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question_answer11)
What determines the nature of the path followed by the particle?
A)
Speed done
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B)
Velocity done
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C)
Acceleration done
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D)
Both [b] and [c] done
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question_answer12)
Acceleration of a particle changes when
A)
direction of velocity changes done
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B)
magnitude of velocity changes done
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C)
speed changes done
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D)
Both [a] and [b] done
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question_answer13)
The area under acceleration time graph gives
A)
distance travelled done
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B)
change in acceleration done
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C)
force acting done
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D)
change in velocity done
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question_answer14)
Acceleration is described as rate of change of
A)
distance with time done
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B)
velocity with distance done
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C)
velocity with time done
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D)
distance with velocity done
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question_answer15)
Which of the following is the correct expression of instantaneous acceleration?
A)
\[a=\frac{\Delta v}{{{(\Delta t)}^{2}}}\] done
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B)
\[a=\frac{dv}{dt}\] done
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C)
\[a=\frac{{{d}^{2}}v}{d{{t}^{2}}}\] done
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D)
\[a={{\left( \frac{\Delta v}{\Delta t} \right)}^{2}}\] done
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question_answer16)
If a body travels with constant acceleration, which of the following quantities remains constant?
A)
Displacement done
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B)
Velocity done
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C)
Time done
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D)
None of these. done
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question_answer17)
Velocity time curve for a body projected vertically upwards is
A)
parabola done
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B)
ellipse done
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C)
hyperbola done
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D)
straight line done
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question_answer18)
A body is thrown upwards and reaches its maximum height At that position
A)
its acceleration is minimum done
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B)
its velocity is zero and its acceleration is also zero done
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C)
its velocity is zero but its acceleration is maximum done
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D)
its velocity is zero and its acceleration is the acceleration due to gravity. done
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question_answer19)
Stopping distance of a moving vehicle is directly proportional to
A)
square of the initial velocity done
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B)
square of the initial acceleration done
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C)
the initial velocity done
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D)
the initial acceleration done
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question_answer20)
The path of a particle moving under the influence of a force fixed in magnitude and direction is
A)
straight line done
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B)
circle done
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C)
parabola done
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D)
ellipse done
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question_answer21)
Velocity-time curve for a body projected vertically upwards is
A)
parabola done
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B)
ellipse done
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C)
hyperbola done
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D)
straight line done
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question_answer22)
An object accelerated downward under the influence of force of gravity. The motion of object is said to be
A)
uniform motion done
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B)
free fall done
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C)
non uniformly accelerated motion done
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D)
None of these done
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question_answer23)
Choose the wrong statement from the following.
A)
The motion of an object along a straight line is a rectilinear motion done
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B)
The speed in general is less than the magnitude of the velocity done
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C)
The slope of the displacement-time graph gives the velocity of the body done
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D)
The area under the velocity-time graph gives the displacement of the body done
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question_answer24)
Free fall of an object (in vacuum) is a case of motion with
A)
uniform velocity done
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B)
uniform acceleration done
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C)
variable acceleration done
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D)
constant momentum done
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question_answer25)
If the displacement of a body varies as the square of elapsed time, then its
A)
velocity is constant done
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B)
velocity varies non-uniformly done
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C)
acceleration is constant done
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D)
acceleration changes continuously done
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question_answer26)
Choose the correct equation to determine distance in a straight line for a body with uniform motion.
A)
\[s=\frac{v}{t}\] done
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B)
\[s={{v}^{2}}t\] done
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C)
\[s=ut+\frac{1}{2}g{{t}^{2}}\] done
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D)
\[s=v\times {{t}^{2}}\] done
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question_answer27)
If the v-t graph is a straight line inclined to the time axis, then
A)
\[a=0\] done
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B)
\[a\ne 0\] done
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C)
\[a=\operatorname{constant}\ne 0\] done
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D)
\[a\ne \operatorname{constant}\ne 0\] done
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question_answer28)
For a moving body at any instant of time
A)
if the body is not moving, the acceleration is necessarily zero done
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B)
if the body is slowing, the retardation is negative done
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C)
if the body is slowing, the distance is negative done
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D)
if displacement, velocity and acceleration at that instant are known, we can find the displacement at any given time in future. done
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question_answer29)
A particle moves 2m east then 4m north then 5 m west. The distance is
A)
11 m done
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B)
10 m done
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C)
-11 m done
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D)
5 m done
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question_answer30)
The ball is projected up from ground with speed 30 m/sec. What is the average velocity for time 0 to 4 sec?
A)
10 m/sec done
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B)
20 m/see done
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C)
15 m/sec done
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D)
zero done
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question_answer31)
A body moves in straight line with velocity \[{{v}_{1}}\] for 1/3rd time and for remaining time with\[{{v}_{2}}\]Find average velocity.
A)
\[\frac{{{v}_{1}}}{3}+\frac{2{{v}_{2}}}{3}\] done
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B)
\[\frac{{{v}_{1}}}{3}+\frac{{{v}_{2}}}{3}\] done
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C)
\[\frac{2{{v}_{1}}}{3}+\frac{{{v}_{2}}}{3}\] done
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D)
\[{{v}_{1}}+\frac{2{{v}_{2}}}{3}\] done
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question_answer32)
A particle moves in straight line with velocity\[{{v}_{1}}\], and\[{{v}_{2}}\] for time intervals which are in ratio 1:2. Find average velocity.
A)
\[\frac{{{v}_{1}}}{3}+\frac{2{{v}_{2}}}{3}\] done
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B)
\[\frac{{{v}_{1}}}{3}+\frac{{{v}_{2}}}{3}\] done
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C)
\[\frac{2{{v}_{1}}}{3}+\frac{{{v}_{2}}}{3}\] done
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D)
\[{{v}_{1}}+\frac{2vl2}{3}\] done
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question_answer33)
A particle moves from (2,3) m to (4,1) m. The displacement vector is
A)
\[2i+2jm\] done
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B)
\[-2i-2jm\] done
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C)
\[2i-2jm\] done
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D)
\[-2i+2jm\] done
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question_answer34)
Speed of a body in particular direction can be called
A)
acceleration done
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B)
displacement done
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C)
velocity done
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D)
distance done
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question_answer35)
Speed of snail as compared to speed of a car will be in units
A)
\[cm\,\,{{s}^{-1}}\] done
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B)
\[m\,\,{{s}^{-1}}\] done
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C)
\[km\,\,{{s}^{-1}}\] done
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D)
\[km\,\,{{h}^{-1}}\] done
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question_answer36)
The speed at any instant of time is known as
A)
average speed done
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B)
velocity done
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C)
given speed done
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D)
instantaneous speed done
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question_answer37)
The average speed of a horse that gallops a distance of 10 km/hr in a time of 1 hour is
A)
10 km/hr done
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B)
20 km/hr done
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C)
30 km/hr done
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D)
More than 30 km/hr done
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question_answer38)
One possible unit of speed is
A)
miles per hour done
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B)
meters per second done
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C)
yards per century done
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D)
all of the above done
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question_answer39)
When a rock thrown straight upward gets to the exact top of its path, its
A)
velocity is 0 and its acceleration is about 10 m/s/s done
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B)
velocity is about 10 m/s and its acceleration is 0 done
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C)
velocity is about 10 m/s and its acceleration is about 10 m/s/s done
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D)
velocity is 0 and so is acceleration. done
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question_answer40)
The part of the car that can change velocity without changing speed is
A)
The steering wheel done
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B)
The brake done
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C)
The gas pedal done
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D)
Nonsense, it is impossible to change velocity without changing speed. done
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question_answer41)
Average speed is
A)
a measure of how fast something is moving done
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B)
the distance covered per unit of time done
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C)
always measured in terms of a unit of distance divided by a unit of time done
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D)
all of the above done
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question_answer42)
When you look at the speedometer in a moving car, you can see the car's
A)
instantaneous speed done
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B)
Average speed done
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C)
Instantaneous acceleration done
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D)
Direction done
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question_answer43)
The 2 measurements necessary for calculating average acceleration are
A)
instantaneous velocity & time done
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B)
Change in velocity and time done
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C)
Distance and speed done
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D)
Velocity and distance done
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question_answer44)
The ____ of a distance versus time graph is speed.
A)
slope done
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B)
y-intercept done
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C)
origin done
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D)
none of the answers done
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question_answer45)
Which of the following controls can change a car's velocity?
A)
the gas pedal done
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B)
the brake pedal done
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C)
the steering wheel done
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D)
all of the above done
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question_answer46)
A car stops and then a start accelerating uniformly at rate of \[3\,\,m\,\,{{s}^{-2}}\], speed of car after 20 seconds is
A)
\[40\,\,m\,\,{{s}^{-2}}\] done
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B)
\[60\,\,m\,\,{{s}^{-2}}\] done
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C)
\[100\,\,m\,\,{{s}^{-2}}\] done
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D)
\[30\,\,m\,\,{{s}^{-2}}\] done
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question_answer47)
What is the acceleration of a car that maintains a constant velocity of 100 km/hr for 10 sees?
A)
0 done
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B)
10 km/hr(s) done
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C)
10m/hr(s) done
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D)
1000 km/hr(s) done
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question_answer48)
Which of the following controls can change a car's velocity?
A)
The gas pedal done
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B)
The brake pedal done
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C)
The steering wheel done
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D)
All of the above done
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question_answer49)
A bird flies due east for 600 meters at a constant speed of 10 m/s. What is the bird's acceleration?
A)
With no change in velocity, there is no acceleration. done
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B)
60 m/s done
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C)
6 m/s/s done
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D)
60 m/s/s done
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question_answer50)
Suppose you are in a car going due east on a straight highway at a constant speed of 30 mph. Which of the following is NOT true?
A)
You and the car's distance is constantly changing done
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B)
Your speed is constant done
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C)
Your velocity is constant done
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D)
Your direction is constantly changing done
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