Question

A roller coaster ride in a park includes a vertical drop of 60 m. Assume that the roller coaster has a speed of nearly zero when it reaches the top of the hill. Neglecting friction, find the speed of the riders at the bottom of the hill

Answer 1

$mgh=mv^2/2\to v=\sqrt{2gh}=\sqrt{2\cdot 9.8\cdot 60}=34.3\ (m/s)$ . Answer