The greatest height reported for a jump into an airbag in 99

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：英语作业时间：2024/05/05 02:31:36

The greatest height reported for a jump into an airbag in 99.4 m by stuntman Dan Koko.In 1948 he jumped from rest from the top of the vegas world hotel and casino.He struck the airbag at a speed of 39m/s.to assess the effects of air resistance,determine how fast he would have been traveling on impact had air resistance been absent.
大概是有个人从99.4 米的大楼跳下来,碰到气垫的速度是39m/s.求什么我就不是很懂.答案是44.1m/s,
free-fall是 g=9.80m/s^2~

问题是,为了研究空气的阻力,求出在没有阻力的情况下,他撞倒气垫时的速度.
所以就很简单了
v^2=2as
v=√(2*9.8*99.4)=44.14=44.1

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