Question

A body of mass 40 kg is moving with velocity 20 metre per second its kinetic energy​

Answer 1

Answer:

8000 joule .

Explanation:

formula of kinetic energy = m×v×v / 2

Answer 2

Given

Mass = 40kg

Velocity = 20m/s

Kinetic energy =?

Formula for kinetic energy = KE =1/2 mv^2

KE = 1/2 X 40 X 20^2

1/2 X 40 X 400

By cancelling 2 and 400

1 X 40 X 200

= 8000 J