AP Physics 1mediummcq1 pt
A roller coaster starts from rest at a height of 40 m and reaches the bottom of a hill 10 m above the ground (g = 10 m/s²). Its speed there is about
A.24 m/s
B.28 m/s
C.14 m/s
D.30 m/s
Explanation
Core Concept
v = √(2gΔh) = √(2·10·30) = √600 ≈ 24 m/s.
Correct Answer
A24 m/s
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