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题目
A fearless bicycle rider announces that he will jump the
Beaver River Canyon.If he does not use a ramp,but sim-
ply launches himself horizontally,is there any way that he
can succeed?Why?

提问时间:2020-08-03

答案
No,he can't succeed!
Because no matter how much the horizontal velocity is ,he will drop under the action of gravity in the vertical direction !
不可以.无论水平速度如何,他在竖直方向上还是会因为受到重力作用而下降!
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