A child on a sled starts from rest at the top of a 15° slope. If the trip to the bottom takes
15)2 s, how long is the slope? Assume that frictional forces may be neglected.
A) 293 m
B) 586 m
C) 1130 m
D) 147 m

Question

Quizplus · Accepted Answer

The acceleration down the slope is due to gravity and can be calculated as $ g \sin(15^\circ) $. Using the equation $ s = \frac{1}{2} a t^2 $, where $ a = g \sin(15^\circ) $ and $ t = 15.2 $ s, the length of the slope $ s $ is approximately 293 m.

A Child on a Sled Starts from Rest at the Top