gentle 210 m slope in the Alps, a skier reduced his top-to-bottom time from 61.0 s with standard skis to 43.0 s with the new skis. Determine the magnitude of his average acceleration with (a) the standard skis and (b) the new skis. Assuming a 3.40° slope, compute the coefficient of kinetic friction for (c) the standard skis and (d) the new skis.
gentle 210 m slope in the Alps, a skier reduced his top-to-bottom time from 61.0 s with standard skis to 43.0 s with the new skis. Determine the magnitude of his average acceleration with (a) the standard skis and (b) the new skis. Assuming a 3.40° slope, compute the coefficient of kinetic friction for (c) the standard skis and (d) the new skis.
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Transcribed Image Text:A ski that is placed on snow will stick to the snow. However, when the ski is moved along the snow, the rubbing warms and partially
melts the snow, reducing the coefficient of kinetic friction and promoting sliding. Waxing the ski makes it water repellent and reduces
friction with the resulting layer of water. A magazine reports that a new type of plastic ski is especially water repellent and that, on a
gentle 210 m slope in the Alps, a skier reduced his top-to-bottom time from 61.0 s with standard skis to 43.0 s with the new skis.
Determine the magnitude of his average acceleration with (a) the standard skis and (b) the new skis. Assuming a 3.40° slope, compute
the coefficient of kinetic friction for (c) the standard skis and (d) the new skis.
(a) Number
0.113
Units
m/s^2
(b) Number
0.227
Units
m/s^2
(c) Number
0.276
Units
This answer has no units
(d) Number
i
Units
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