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question_answer1) A body projected vertically upwards crosses a point twice its journey at a height h just after \[{{t}_{1}}\]and \[{{t}_{2}}\]seconds. Maximum height reached by the body is
question_answer2) A car moving with a speed of 50 km/hr can be stopped by brakes after at least 6 m. If the same car is moving at a speed of 100 km/hr, the minimum stopping distance is
question_answer3) The initial velocity of a particle\[\overrightarrow{u}=\overrightarrow{4i}+\overrightarrow{3j}\]It is moving with uniform acceleration\[\overrightarrow{a}=0.\overrightarrow{4i}+0.\overrightarrow{3}j\] Its velocity after 10 seconds is
question_answer4) A starts from rest and moves with acceleration\[{{a}_{1}}\]. Two seconds later, B starts from rest and moves with an acceleration\[{{a}_{2}}\]. If the displacement of A in the\[{{5}^{\text{th}}}\]second is the same as that of B in the same interval, the ratio of\[{{a}_{1}}\]to\[{{a}_{2}}\]is
question_answer5) The velocity time graphs of a body is as shown. The displacement suffered by it is
question_answer6) A body travels 200 cm in the first two seconds and 220 cm in the next 4 seconds with deceleration. The velocity of the body at the end of the 7th second is
question_answer7) A particle starts moving from rest under uniform acceleration. It travels a distance x in the first two seconds and a distance y in the next two seconds. If y = nx, then n=..........
question_answer8) Initial velocity of a particle moving along a straight line is 10 m/s and its retardation is\[\text{2 m}/{{\text{s}}^{\text{2}}}\]. Distance covered by the particle in the fifth second of its motion is
question_answer9) A particle starts moving from the position of rest under a constant acceleration. It travels a distance 'x' in the first 10s, a distance 'y' in the next 10s then
question_answer10) Tripling the speed of a motor car multiples the distance needed for stopping it by
question_answer11) A bus accelerates uniformly from rest and acquires a speed of 75 km/hr in 20 seconds. The acceleration of the bus is
question_answer12) If a body looses half of its velocity on penetrating 3 cm in a wooden block, then how much will it penetrate more before coming to rest
question_answer13) A motorist travels from A to B at a speed of 40 kmph and returns back at a speed of 60 kmph. H is average speed will be
question_answer14) A point moves with uniform acceleration\[{{v}_{1}},{{v}_{2}}\]and\[{{v}_{3}}\]. Denote the average velocities in three successive intervals of time\[{{t}_{1}},{{t}_{2}}\]and\[{{t}_{3}}\].Correct relation among the following is
question_answer15) A car moving at a speed of 20 m/s undergoes uniform retardation of\[\text{5 m}/{{\text{s}}^{\text{2}}}\]. It stops in a time of
question_answer16) A car is moving along a straight road with a uniform acceleration. It passes through two points P and Q separated by a certain distance with velocity of 30 kmph and 40 kmph respectively. Velocity of the car, exactly midway between P and Q, is
question_answer17) A car travelling at a speed of 30 kmph is brought to rest in 8m by applying brakes. If the same car is travelling at 60 kmph, it can be brought to a halt with the same braking force in a distance of:
question_answer18) If a body loses half of its velocity on penetrating 3cm in a wooden block, how much will it penetrate more before coming to rest?
question_answer19) Speeds of two identical cars are u and 4u at a specific instant. The ratio of the respective distances in which the two cars are stopped from that instant is
question_answer20) A car moving with a speed of 50 km/hr can be stopped by brakes after at least 6 m. If the same car is moving at a speed of 100 km/hr, the minimum stopping distance is
question_answer21) The distances travelled by a body, starting from rest and travelling with uniform acceleration in successive intervals of time of equal duration, will be in the ratio of
question_answer22) A bus accelerates uniformly from rest and acquires a speed of 36 kmph in 10s. The acceleration is
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