AP Physics 1mediummcq1 pt
A stone is thrown downward at 5.0 m/s from a bridge 30 m above a river (g = 10 m/s²). Its impact speed is
A.25 m/s
B.35 m/s
C.5.0 m/s
D.24 m/s
Explanation
Core Concept
v² = v₀² + 2gh = 25 + 2(10)(30) = 625, so v = 25 m/s.
Correct Answer
A25 m/s
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