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Question

A 500gm ball moving at 15m/s slows down uniformly until it stops. If the ball travels 15m, what was the average net force applied while it was coming to a stop?
  1. 0.375N
  2. 3.75N
  3. 37.5N
  4. 6.25N

A
0.375N
B
37.5N
C
3.75N
D
6.25N
Solution
Verified by Toppr

Using IIIrd kinematic equation:
v2=u2+2as
255=2×a×15
a=152m/s

Force is given as :
F=ma
=152×0.500
=3.75N

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