AP Physics 1hardmcq1 pt
A 3.0 kg cart moving at 2.0 m/s collides elastically with a 1.0 kg cart at rest. The 1.0 kg cart's final speed is
A.3.0 m/s
B.2.0 m/s
C.4.0 m/s
D.1.5 m/s
Explanation
Core Concept
Elastic formulas: v₂' = 2m₁v₁/(m₁+m₂) = 2(3.0)(2.0)/4.0 = 3.0 m/s.
Correct Answer
A3.0 m/s
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