MCQ PRACTICE – 1

A body is falling a height ℎ. After it has fallen a height ℎ/2. it will possess

A ball rolling on the ground possesses

Work done is equal to?

A body is moved along a straight line by a machine delivering constant power. The distance moved by the body in time t is proportional to

When a body falls freely towards the earth, then its total energy:

We can explain free-fall of an object on the basis of?

At the start of the free-fall of an object from height 

The spring will have maximum potential energy when

A ball of mass 2 kg hits a floor with a speed of 4 m/s at an angle of 60ºwith the normal. If (e=1/2); then the change in the kinetic energy of the ball is

When the force and the displacement are in the opposite directions, the work done by the force is ..........

9800 joule of energy was spent to raise a mass of 50kg, the mass was raised to a height of

A constant force of 5N is applied on a block of mass 20 kg for a distance of 2.0 m, the kinetic energy acquired by the block is

If water is flowing in a pipe at a height 4m from the ground then its potential

If a body is released from a certain height, during its fall.

Whenever energy gets transformed, the total energy_______.

Bullet 2 has twice the mass of bullet 1. Both are fired so that they have the same speed. If the kinetic energy of bullet 1 is K, is the kinetic energy of bullet 2

Is the work required to be done by an external force on an object on a frictionless, horizontal surface to accelerate it from a speed v to a speed 2v.

A ball is allowed to fall from a height of 10m. if there is 

The height of the water dam in the hydroelectric power station is 20 m. How much water. in 1 second, should fall on turbine, so that 1 MW power is generated ?(g=10m/s^2 )

From an automatic gun a man fires 360 bullets per minute with a speed of 360 km/hr. If each bullet weighs 20g, the power of the gun is