Question

A 110 kg man is skiing across level ground at a speed of 7.5 m/s when he comes to the small slope 1.4 m higher than ground level shown in the following figure. 8.0 m 1.4 m (a) If the skier coasts up the hill, what is his speed (in m/s) when he reaches the top plateau? Assume friction between the snow and skis is negligible. m/s (b) What is his speed (in m/s) when he reaches the upper level if a 75 N frictional force acts on the skis? m/s

          A 110 kg man is skiing across level ground at a speed of 7.5 m/s when he comes to the small slope 1.4 m higher than ground level shown in the following figure.
8.0 m
1.4 m
(a) If the skier coasts up the hill, what is his speed (in m/s) when he reaches the top plateau? Assume friction between the snow and skis is negligible.
m/s
(b) What is his speed (in m/s) when he reaches the upper level if a 75 N frictional force acts on the skis?
m/s

A 110 kg man is skiing across level ground at a speed of 7.5 m/s when he comes to the small slope 1.4 m higher than ground level shown in the following figure.
8.0 m
1.4 m
(a) If the skier coasts up the hill, what is his speed (in m/s) when he reaches the top plateau? Assume friction between the snow and skis is negligible.
m/s
(b) What is his speed (in m/s) when he reaches the upper level if a 75 N frictional force acts on the skis?
m/s

Added by Raquel G.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Mkhitar Hobosyan

08/07/2023

Step 1

The potential energy gained by the skier can be calculated using the formula: PE = mgh where m is the mass of the skier, g is the acceleration due to gravity (9.8 m/s^2), and h is the height of the slope (1.4 m). PE = (110 kg)(9.8 m/s^2)(1.4 m) = 1523.6 J Show more…

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A 110 kg man is skiing across level ground at a speed of 7.5 m/s when he comes to the small slope 1.4 m higher than ground level shown in the following figure. (a) If the skier coasts up the hill, what is his speed (in m/s) when he reaches the top plateau? Assume friction between the snow and skis is negligible. (b) What is his speed (in m/s) when he reaches the upper level if a 75 N frictional force acts on the skis?