Question

A body of mass 5 kg is moving with a velocity of 10 m/s. What will be it's Kinetic energy? *​

Answer 1

Explanation:

ke = 0.5 mv^2

kinetic energy= 0.5(5)(10)(10)

= 5(5)(10)=250J

Answer 2

Answer:

$k = \frac{1}{2} mv {}^{2}$

k = ?

m = mass = 5kg

v = velocity = 10m/s

k = (1/2)·(5kg)(10m/s)²

= (1/2)(5kg)(100m²/s²)

= (1/2)(500 J)

= 250 J

J = joules = kg·m²/s² = unit of energy.