When brakes are applied to a moving vehicle, the work done by the braking force is _______________.

SI unit of kinetic energy is _______________

Work done can be zero if the angle between displacement and force is __________________.

Work done can be negative of the angle between force and displacement is an ____________ angle.

When a spring is compressed than the force applied by the spring, than _____________ work is done.

Displacement is a ____________ .

If force and displacement of particle in direction of force are doubled. Work would be

How much work is done by a force of 10 N in moving an object through a distance of 5 m in the direction opposite to the force?

Two bodies of masses 2 kg and 5 kg respectively are movinng at same velocity. The ratio of their kinetic energy is

Which of the following are correct :

(a) When a horse pulls a cart , the applied force and the displacement are in the same direction.

(b) While kicking a football the displacement occur in  the  direction of force .

(c) When a body is falling down from some height  the direction of force and the displacement are in the same direction.