AP Physics 1mediummcq1 pt
Two cars drive toward each other, one at 15 m/s east and one at 15 m/s west. The speed of the second car measured by the first is
A.30 m/s
B.0 m/s
C.15 m/s
D.45 m/s
Explanation
Core Concept
Relative speed of opposite-directed motion adds: 15 + 15 = 30 m/s.
Correct Answer
A30 m/s
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