A force of 10N act on a body of mass 5Kg for 2 sec than change in momentum is

Answer 1

Change in momentum = Force x Time

= 10N x 2s

= 20 Ns

Now, we know that momentum = mass x velocity

Initial momentum = 5kg x 0 = 0

Final momentum = 5kg x v (let's assume the velocity gained by the body in these 2 seconds is 'v')

Change in momentum = Final momentum - Initial momentum

20 Ns = 5kg x v - 0

v = 20 Ns / 5kg

v = 4 m/s

Therefore, the change in momentum is 20 Ns and the final velocity of the body is 4 m/s.