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Answer to Question #21991 in Mechanics | Relativity for Willim

Question #21991
A sled is moving at a constant speed down a surface inclined at 45.0° with the horizontal and travels 30 meters in 4 seconds. Calculate the vertical velocity of the sled at the end of 4 seconds
Expert's answer
As speed is constant, V = d / t.
The vertical velocity Vx = V * cosA = d * cosA / t.
As d = 30 m and t = 4 s, V = 30 / 4 = 7.5 m/s and A = 45.0°,getting:
Vx = 30 * 1 / (4 * sqrt(2)) = 7.5 / sqrt(2) =approx. 5.3033 m/s.

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Assignment Expert
21.06.13, 14:28

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20.06.13, 21:39

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