AP Physics 1mediummcq1 pt
A 100 kg cannon fires a 5.0 kg ball at 200 m/s. The cannon's recoil speed is
A.10 m/s
B.20 m/s
C.5.0 m/s
D.200 m/s
Explanation
Core Concept
0 = (100)v + (5.0)(200), so v = −1000/100 = −10 m/s.
Correct Answer
A10 m/s
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