Given,
Mass of ball 0.05kg
Initial Velocity (u)=10m/s
Final Velocity (v)=(−10m/s) [Opposite in direction]
No. of striking (n)=4 times
Time taken (t)=2sec
Average force on wall (F)=?
We have,
F=n(mv−mu)t = 4(10∗0.05−(−10∗0.05))2 = 2N
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