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a student drops a ball from a window 7 m above the sidewalk . how fast is it moving when it hits the sidewalk ?
3 years ago

Answers

R_scott
potential energy becomes kinetic energy

m g h = 1/2 m v^2 ... v = √(2 g h) = √(2 * 9.8 * 7) m/s
3 years ago

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