A kid drops 1.2kg heavy ball vertically down. The ball hits ground and vertically bounce back. Speeds of the ball just before and after are 8 m/s and 6 m/s respectively. The ball was in contact with the ground for 2ms (milli seconds). What is the magnitude of the average force on the ball during this collision

8400 N

Explanation:

We are given that

Mass,m=1.2 kg

Initial speed,u=-8 m/s

Final speed,v=6 m/s

Time,

We have to find the magnitude of the average force on the ball during this collision.

Change in momentum,=

Average force,

Using the formula

Hence, the magnitude of the average force on the ball during this collision=8400 N

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