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山鹰FTC-2000教练机是目前国产列装最先进的高级教练机,它的最高速度达到1000千米每小时。FTC-2000教练机和汽车的200米竞速结果是这样的:
FTC-2000教练机完胜汽车。
那么,张培萌和FTC-2000教练机比赛跑50米呢?
张培萌赢了!
更残酷的挑战来了,第二场,张培萌和歼-10战斗机展开100米竞速。
歼-10战斗机有着“超音速战机”之称,其特点是推重大、力量足,最快爬升速度达到每秒300米。
比赛开始!
最终,张培萌没能挑战成功。
张培萌:
歼-10太厉害了,比上次竞速的教9声音还要大很多,感觉那个声音要撕裂时空一样。通过训练,可能会把距离拉小一点,但是以肉体之躯和我们祖国最高精尖的战斗机比,是再怎么弥补也无法相提并论的。
解读:短距离人更快长距离飞机快
你猜中结果了吗?专家对人机大战进行了科学解读。
中国科学院物理所研究员曹则贤:
加速度是描述物体运动速度变化快慢的物理量。短跑运动员蹬地的爆发力能够达到4000牛顿,也就是大约400千克,虽然其中向前力量只占一部分,但是相对于人体的自重,依然能够获得非常大的加速度。而飞机的推力虽然大,但相对于其自重,加速度还是比短跑运动员的小。所以,在短距离内人比飞机跑得快。然而人体的极限速度一般不超过12米每秒,而飞机则能够持续加速,因此如果距离比较长,飞机最终会反超短跑运动员。
责任编辑:曲格林 CN064
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