AP Physics 1mediummcq1 pt
A 50 g bullet is fired at 400 m/s into a 1.95 kg block at rest on frictionless ice, embedding in it. The block's speed afterward is
A.10 m/s
B.20 m/s
C.5.0 m/s
D.400 m/s
Explanation
Core Concept
(0.050)(400) = (2.00)v, so v = 20/2 = 10 m/s.
Correct Answer
A10 m/s
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