Question

A body of mass 50 kg is falling from a height 100 m. After it has fallen a height 50 m, it will possess. Which energy will be used. ​

Answer 1

Answer:

Let a body of mass ′m′ placed at a height ′h′ above the ground, start falling down from rest.`

When the body falls from a height h to h/2, the potential energy is given as 2mgh.

The body covers the distance h/2 with a velocity v. We make use of the third equation of motion to obtain velocity of the body.

v2−u2=2aS

Here, u=0,a=g and S=x

v2−0=22gh,thatisv2=gh

Kinetic energy = 21mv2

That is, K.E=2mgh

Hence, at height h/2 the energy possessed is half potential energy and half the kinetic energy.

Explanation:

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