AIPMT PRELIMS 2006 Physics Impulse and Momentum MCQ Question
A 0.5 kg ball moving with a speed of 12 m/s strikes a hard wall at an angle of 30° with the wall. It is reflected with the same speed and at the same angle. If the ball is in contact with the wall for 0.25 s, the average force acting on the wall is:
8 N
24 N
16 N
96 N
Correct Answer
Detailed Explanation
The change in momentum is calculated using the formula Δp = 2mv cos(θ). The average force is then F = Δp/Δt. Substituting the given values, the average force is 24 N.
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