Question

At what speed should a ball of mass 2 kg be rolled in order to reach the other side of

a 6 m high slope?

A. 12.52 m/s
B. 13.25 m/s
C. 10.84 m/s
D. 15.64 m/s

Answer 1

M g H = 1/2 M v^2 potential energy = kinetic energy

v^2 = 2 g H = 2 * 9.80 * 6 = 117.6 m/s^2

v = 10.8 m/s

(C)