AP Physics 1mediummcq1 pt
A 60 kg astronaut at rest throws a 2.0 kg wrench at 10 m/s. The astronaut's recoil speed is about
A.0.33 m/s
B.3.0 m/s
C.10 m/s
D.1.0 m/s
Explanation
Core Concept
0 = (60)v + (2.0)(10), so v = −20/60 ≈ −0.33 m/s.
Correct Answer
A0.33 m/s
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