a skier is the top of the hill . at the bottom of the hill she has the velocity if 12m/s how the tall was the hill
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Answer:
There’s absolutely no way of answering this from the (lack of) information given.
I guess the skier started from the top of the hill - but that’s not stated in the question.I guess they started from stationary, and relied only on gravity to descend - but again that’s not stated.
Even knowing the answers to those two points, the question still can’t be answered. All I can say is that the hill must be at least 7.35 metres tall. That assumes the hill is vertical! And that not only is there no friction between the skis and the (vertical) hill, but there is also no air resistance either. Now I have skied a lot, in Europe and in Canada, and a vertical hill that is in a vacuum (no air resistance) is not something I recall ever finding!
If the hill is not vertical then friction between the skis and snow will limit the speed. You could have a ‘hill’ thousands of metres tall, with a gentle gradient, where the skier never reaches 12 m/s on the whole of the descent.
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Answer:
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