question_answer 1)
A rider on horse back falls when horse starts running all of a sudden because [MP PMT 1982]
A)
Rider is taken back done
clear
B)
Rider is suddenly afraid of falling done
clear
C)
Inertia of rest keeps the upper part of body at rest whereas lower part of the body moves forward with the horse done
clear
D)
None of the above done
clear
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question_answer 2)
When a train stops suddenly, passengers in the running train feel an instant jerk in the forward direction because [MP PMT 1982]
A)
The back of seat suddenly pushes the passengers forward done
clear
B)
Inertia of rest stops the train and takes the body forward done
clear
C)
Upper part of the body continues to be in the state of motion whereas the lower part of the body in contact with seat remains at rest done
clear
D)
Nothing can be said due to insufficient data done
clear
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question_answer 3)
Inertia is that property of a body by virtue of which the body is [MGIMS Wardha 1982]
A)
Unable to change by itself the state of rest done
clear
B)
Unable to change by itself the state of uniform motion done
clear
C)
Unable to change by itself the direction of motion done
clear
D)
Unable to change by itself the state of rest and of uniform linear motion done
clear
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question_answer 4)
A man getting down a running bus falls forward because [CPMT 1981]
A)
Due to inertia of rest, road is left behind and man reaches forward done
clear
B)
Due to inertia of motion upper part of body continues to be in motion in forward direction while feet come to rest as soon as they touch the road done
clear
C)
He leans forward as a matter of habit done
clear
D)
Of the combined effect of all the three factors stated in, and done
clear
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question_answer 5)
A boy sitting on the topmost berth in the compartment of a train which is just going to stop on a railway station, drops an apple aiming at the open hand of his brother sitting vertically below his hands at a distance of about 2 meter. The apple will fall [CPMT 1986]
A)
Precisely on the hand of his brother done
clear
B)
Slightly away from the hand of his brother in the direction of motion of the train done
clear
C)
Slightly away from the hand of his brother in the direction opposite to the direction of motion of the train done
clear
D)
None of the above done
clear
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question_answer 6)
Newton's first law of motion describes the following [MP PMT 1996]
A)
Energy done
clear
B)
Work done
clear
C)
Inertia done
clear
D)
Moment of inertia done
clear
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question_answer 7)
A person sitting in an open car moving at constant velocity throws a ball vertically up into air. The ball falls [EAMCET (Med.) 1995; MH CET 2003;BCECE 2004]
A)
Outside the car done
clear
B)
In the car ahead of the person done
clear
C)
In the car to the side of the person done
clear
D)
Exactly in the hand which threw it up done
clear
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question_answer 8)
A bird weighs 2 kg and is inside a closed cage of 1 kg. If it starts flying, then what is the weight of the bird and cage assembly [AFMC 1997]
A)
1.5 kg done
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B)
2.5 kg done
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C)
3 kg done
clear
D)
4 kg done
clear
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question_answer 9)
A particle is moving with a constant speed along a straight line path. A force is not required to [AFMC 2001]
A)
Increase its speed done
clear
B)
Decrease the momentum done
clear
C)
Change the direction done
clear
D)
Keep it moving with uniform velocity done
clear
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question_answer 10)
When a bus suddenly takes a turn, the passengers are thrown outwards because of [AFMC 1999; CPMT 2000, 2001]
A)
Inertia of motion done
clear
B)
Acceleration of motion done
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C)
Speed of motion done
clear
D)
(a) Both (b) and done
clear
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question_answer 11)
A mass of 1 kg is suspended by a string A. Another string C is connected to its lower end (see figure). If a sudden jerk is given to C, then
A)
The portion AB of the string will break done
clear
B)
The portion BC of the string will break done
clear
C)
None of the strings will break done
clear
D)
The mass will start rotating done
clear
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question_answer 12)
In the above Question, if the string C is stretched slowly, then
A)
The portion AB of the string will break done
clear
B)
The portion BC of the string will break done
clear
C)
None of the strings will break done
clear
D)
None of the above done
clear
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