A body of mass 2kg collides with a wall with speed 100m/s and rebounds with same speed if the time of contact was 1/50 sec. The force excerted on the wall is
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Answer:
10000 N
Explanation:
f = ma
a = v - u / t
a = 0 - 100/ 1/50 as initial speed is 100 m/s but 0 when hit the wall
a = -100 * 50
a = - 5000
f = 2 * - 5000 = - 10000 N
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