EasyPhysicsprojectile motion
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Two billiard balls of mass 0.05 kg each moving in opposite directions with 10 ms⁻¹ collide and rebound with the same speed. If the time duration of contact is t = 0.005 s, then what is the force exerted on the ball due to each other ?
A
100 N
B
200 N
C
300 N
D
400 N
Explanation
Δp = m(vf − vi) = 0.05(−10 − 10) = −1 kg·m/s F = Δp/Δt = 1/0.005 = 200 N
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