STANDARDPhysics-Laws of Motion
STANDARD Physics Impulse and Momentum MCQ Question
Type: MCQ-conceptual-Medium-Class 11
A rigid ball of mass m strikes a rigid wall at 60° and gets reflected without loss of speed as shown in the figure. The value of impulse imparted by the wall on the ball will be
A
mV
B
2mV
C
mV/2
D
mV/3
Correct Answer
Option A
Detailed Explanation
The impulse imparted by the wall is equal to the change in momentum of the ball. Since the ball is reflected at the same angle and speed, the horizontal component of velocity changes direction, resulting in a change in momentum of 2mVcos(60°) = mV.
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