Author Question: An Olympic skier moving at 19.5 m/s down a 17.0 slope encounters a region of wet snow, of ... (Read 71 times)

skymedlock · **on:** Jul 28, 2018

An Olympic skier moving at 19.5 m/s down a 17.0 slope encounters a region of wet snow, of coefficient of friction k = 0.740 . How far down the slope does she go before stopping?
a. 56.7 m
b. 46.7 m
c. 56.1 m
d. 36.7 m
e. 37.4 m

Question 2

A 60-kg (including the passenger) sled is subject to a net force of 20 N pushing in the direction of the sled's motion as it is moving over a horizontal surface for a distance of 11 m after having started from rest. At this point the sled is released as it starts down a 10.0 incline. However, the snow is not very deep, and the sled stops after having moved an additional 35 m. What is the work done by friction while the sled is on the incline?
a. 3.6E+3 J
b. 3.8E+3 J
c. 3.4E+3 J
d. 2.0E+4 J