A racquet strikes a ball for a longer time with the same force. The change in momentum:
AZeroes
BGrows
CShrinks
DStalls
Answer & Solution
Correct answer: B. Grows
1. Force acting longer keeps changing the motion.
2. Longer contact means a larger effect.
3. So the change in momentum grows.
_Source: OpenStax University Physics Volume 1, Chapter 9, Linear Momentum and Collisions._
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