When the 150-lb skier is at point A he has a speed of 5 ft/s. When the skier reaches point B on the smooth slope, the slope follows the cosine curve shown. Suppose that y(x) = 48 cos (a) ft, where a is in ft. Neglect friction and air resistance. (Figure 1).
When the 150-lb skier is at point A he has a speed of 5 ft/s. When the skier reaches point B on the smooth slope, the slope follows the cosine curve shown. Suppose that y(x) = 48 cos (a) ft, where a is in ft. Neglect friction and air resistance. (Figure 1).
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Transcribed Image Text:When the 150-lb skier is at point A he has a speed of 5 ft/s. When
the skier reaches point B on the smooth slope, the slope follows the
cosine curve shown. Suppose that y(x) = 48 cos (2) ft,
where a is in ft. Neglect friction and air resistance. (Figure 1).
Part A
Determine the skier's speed when he reaches point B on the smooth slope.
Express your answer to three significant figures and include the appropriate units.
HÀ
vB =
Value
Units
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Part B
What is the normal force on the skier's skis at B?
Express your answer to three significant figures and include the appropriate units.
HA
N =
Value
Units
Figure
< 1 of 1
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A
Part C
B
What is the skier's rate of increase in speed at B?
Express your answer to three significant figures and include the appropriate units.
HA
at =
Value
Units
35 ft
P Pearson
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