Free Fall from Rest · PhysicsBowl 2017 #2

Physics · mechanics

Problem

A small object is released from rest and falls freely for 4.00 s until reaching the ground. What was the height above the ground from which the object was released? (Use

g = 10.0 \frac{m}{s^2}

) (A) 10.0 m (B) 20.0 m (C) 40.0 m (D) 80.0 m (E) 160.0 m

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