Question

a football of of mass 400 kg at 20 ms-¹ is kicked by player such that returns back to its original path with a velocity of 10 ms -¹ calculated the change in momentum occurred in the motion of football due to force applied by the player​

Answer 1

Explanation:

Mass of ball(m)=400kg

velocity initial=20ms-1

velocity final=10ms-1

change in momentum(∆p)=m(final velocity -initial velocity)

by sign convertion

400(-10-20)=400(-30)=-12000