Question

A ball is dropped from a height of 10 m. If the energy of the ball reduces by 40% after striking the ground, how much high can the ball bounce back?

Define power. How will you differentiate between kW and kW h? If the velocity of a ball is tripled, what will be the ratio of

Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it.

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