53. A ball with a momentum of 4.0 kg m/s hits a wall and bounces straight back without losing energy. It's change in momentum after collision
A increases
B. decreases
C. has the same magnitude and direction before collision
D. has the same magnitude but opposite in direction before collision
A increases
B. decreases
C. has the same magnitude and direction before collision
D. has the same magnitude but opposite in direction before collision
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Answer:
D.Has the same magnitude but opposite in direction before collision
Explanation:
Since the ball bounces back without losing kinetic energy, its speed, and hence the magnitude of its momentum remains the same after the collision, only the direction reverses. The change in momentum of the ball is 8.0 Kg⋅m/s .
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