Question

Derive an expression for kietic energy ofan object?

Answer 1

Energy is work
Work = force X displacement
Force = mass X acceleration = ma
For displacement S
${v}^{2} = {u}^{2} + 2as$
Taking u = 0
$s = {v}^{2} \div 2a$
ma X v2/2a
I/2 mv2