Question

a ball of mass 2kg with speed 10 m/s hit a wall perpendicularly and bounce back with same speed.  Find change in momentum​

Answer 1

Explanation:

Mass of ball (m) = 2 kg

speed of ball at initial state (u) = 0 m/s

speed of ball at final state (v) = 10 m/s

Change in momentum (∆p) = m×(v-u)

= 20×(10-0)

= 20×10

= 200 kg m/s