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A 5.0×10?2 kg arrow hits the target at 25 m/s and penetrates 3.8cm before stopping.
A. What average force did the target exert on the arrow?
B. What average force did the arrow exert on the target?
C. An identical arrow strikes the target at 55 . If the target exerts the same average force as before, what's the penetration depth?
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