A 20 kg child is switching on a swing. The Child is given a push start so she is

Question

A 20 kg child is switching on a swing. The Child is given a push start so she is moving 2.0 m/s at the beginning, 0.80 m above the low point. Her speed at the lowest point and the height to which she will rise on the far side can be computed. If friction and air drag effects are NOT small enough to be ignored, what effect would this have upon the maximum speed and maximum height values that she experiences, in relation to what was computed assuming little friction and air drag?

A) there would be no change

B) both the speed and the final height values would be smaller

C) both the speed and the final height values would be greater

D) the speeds would be the same, but the final position would be higher

E)the speeds would be faster, but the final position values would be the same

Explanation / Answer

B) both the speed and the final height values would be smaller

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