Rolling

AP Physics 1· difficulty 3/5

h

A
$\sqrt{(4/3)gh}$
B
$\sqrt{2gh}$
C
$\sqrt{(10/7)gh}$
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D
$\sqrt{gh}$

Explanation

\tfrac{1}{2}M v^2(1 + 2/5) = \tfrac{7}{10}M v^2 = M g h \Rightarrow v = \sqrt{(10/7)gh}

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