A particle starting from rest travels a distance x in first 2 seconds and a distance y in next two seconds, then
The initial velocity of a body moving along a straight line is 7 m/s. It has a uniform acceleration of 4m/s² . The distance covered by the body in the 5th second of its motion is
The velocity of a body depends on time according to the equation v=20+0.1t² . The body is undergoing
Which of the following four statements is false
A particle moving with a uniform acceleration travels 24 m and 64 m in the first two consecutive intervals of 4 sec each. Its initial velocity is
The position of a particle moving in the xy-plane at any time t is given by x=(3t²-6t) metres, y=(t²-2t) metres. Select the correct statement about the moving particle from the following
If body having initial velocity zero is moving with uniform acceleration 8 m/sec² the distance travelled by it in fifth second will be
A body of mass 10 kg is moving with a constant velocity of 10 m/s. When a constant force acts for 4 seconds on it, it moves with a velocity 2 m/sec in the opposite direction. The acceleration produced in it is
A body starts from rest from the origin with an acceleration of 6 m/s² along the x-axis and 8 m/s² along the y-axis. Its distance from the origin after 4 seconds will be
A car moving with a velocity of 10 m/s can be stopped by the application of a constant force F in a distance of 20 m. If the velocity of the car is 30 m/s, it can be stopped by this force in
A car moving with a speed of 40 km/h can be stopped by applying brakes after atleast 2 m. If the same car is moving with a speed of 80 km/h, what is the minimum stopping distance
The displacement is given by x=2t²t+5 , the acceleration at t=2s is
Two trains travelling on the same track are approaching each other with equal speeds of 40 m/s. The drivers of the trains begin to decelerate simultaneously when they are just 2.0 km apart. Assuming the decelerations to be uniform and equal, the value of the deceleration to barely avoid collision should be
A body moves from rest with a constant acceleration of 5 m/s² . Its instantaneous speed (in m/s) at the end of 10 sec is
A boggy of uniformly moving train is suddenly detached from train and stops after covering some distance. The distance covered by the boggy and distance covered by the train in the same time has relation
A body starts from rest. What is the ratio of the distance travelled by the body during the 4th and 3rd second
The acceleration 'd in m/s² of a particle is given by a=3t²+2t+2 where t is the time. If the particle starts out with a velocity u=2m/s at t=0, then the velocity at the end of 2 second is
For a moving body at any instant of time
The x and y coordinates of a particle at any time t are given by x=7t+4t² and y=5t , where x and y are in metre and t in seconds. The acceleration of particle at t=5s is
The engine of a car produces acceleration 4 m/s² in the car. If this car pulls another car of same mass, what will be the acceleration produced
If a body starts from rest and travels 120 cm in the 6th second, then what is the acceleration
If a car at rest accelerates uniformly to a speed of 144 km/h in 20 s. Then it covers a distance of
A truck and a car are moving with equal velocity. On applying the brakes both will stop after certain distance, then
If a train travelling at 72 kmph is to be brought to rest in a distance of 200 metres, then its retardation should be
The position x of a particle varies with time t as x=at^2-bt^3. The acceleration of the particle will be zero at time t equal to
