Question

what is kinetic energy? Derive an expression for kinetic energy of a body of mass 'm' moving with a speed 'v'​

Answer 1

when the body is in motion the energy is having it is known as kinetic energy

kinetic energy equal to half MV square

Answer 2

Answer:

Explanation:we know that

Work done =change in the kinetic energy

So, work done= f×s

F=m×a eqn-1

From 3rd eqn of motion

S=u2-v2÷2as

Combine both eqn

Kinetic energy=ma×v2-u2÷2a

Solve and get ans.