Question

Derive the formula for the kinetic energy of an object of mass m , moving with velocity v.​

Answer 1

Answer:

Since kinetic energy is equal to the work done on the body to change its velocity from 0 to v , we obtain: kinetic energy , Ek=21mv2.

Explanation:

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Answer 2

Answer:

K.E of the body = work done by it due to motion

K.E=FS

vi=v

vf=0

F=ma

a=‐F/m

Using third equation of motion

2aS=vf²‐vi²

2(-F/m)S=(0)²‐(v)²

FS=1\2mv²

Equation gives the kinetic energy possessd by a body of mass m moving with velocity v.