Which of the following four statements is false?

If the momentum is somehow increased by 20 % by increasing the mass and keeping the velocity same, what is that increase in the Kinetic energy of the body if all the other factos remained the same.

Consider the acceleration, velocity and displacement of a tennis ball as it falls to the ground and bounces back. Directions of which of these changes in the process ?

Two bodies of different masses m_a and m_b are dropped from two different heights a and b. The ratio of the time taken by the two to cover these distances are 

Ronaldo Kicked a football vertically Upward velocity-time curve of football is

A ball is thrown up with an initial velocity of 20 m/s and after some time it returns. What is the maximum height reached? Take g = 10 m/s².

A body is released from the top of a tower of height h. It takes t sec to reach the ground. Where will be the ball after time t/2 sec 

The velocity of a body moving with a uniform acceleration of 2 m/sec² is 10 m/sec. Its velocity after an interval of 4 sec is 

A body was thrown up with an initial speed of " the body reaches the ground after: 

A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of 

A body is thrown vertically upwards. If air resistance is to be taken into account, then the time during which the body rises is

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 ball is dropped downwards. After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds 

A stone dropped from the top of the tower touches the ground in 4 sec. The height of the tower is about 

The initial velocity of the particle is 10 m/sec and its retardation is 2 m/sec². The distance moved by the particle in 5^th second of its motion is 

The position-time graph for a free-falling object is:

A body is projected up with a speed ‘u’ and the time taken by it is T to reach the maximum height H. Pick out the correct statement.

An object is projected upwards with a velocity of 100 m/s. It will strike the ground after (approximately) 

If the body starts from rest and moves with constant acceleration then the ratio of distances in consecutive equal time interval

If a body starts from rest and travels 120 cm in the 6^th second, then what is the acceleration 

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 body starting from rest moves with constant acceleration. The ratio of distance covered by the body during the 5th sec to that covered in 5 sec is 

A body, thrown upwards with some velocity, reaches the maximum height of 20m. Another body with double the mass thrown up, with double initial velocity will reach a maximum height of 

A motor car moving with a uniform speed of 20 m/sec comes to stop on the application of brakes after travelling a distance of 10 m. Its acceleration is 

A body, whose momentum is constant, must have constant

Two stones of different masses are dropped simultaneously from the top of a building 

Velocity of a body on reaching the point from which it was projected upwards, is 

A ball is thrown upward with a velocity of 100 m/s it will reach the ground after :-

A 210-meter long train is moving due north at a speed of 25 m/s. A small bird is flying due South a little above the train with a speed of 5m/s. The time taken by the bird to cross the train is 

The variation of velocity of a particle with time moving along a straight line is illustrated in the following figure. The distance travelled by the particle in four seconds is 

A body falls from rest, its velocity at the end of first second is 

A body starts from rest. What is the ratio of the distance travelled by the body during the 4th and 3rd second