英语翻译A tennis ball thrown horizontally from the top of a water tower lands 20m from the base of the tower.if the tennis ball is initially thrown at a velocity of 10m/s,how high is the water tower?How long does it take the tennis ball to reach
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![英语翻译A tennis ball thrown horizontally from the top of a water tower lands 20m from the base of the tower.if the tennis ball is initially thrown at a velocity of 10m/s,how high is the water tower?How long does it take the tennis ball to reach](/uploads/image/z/1861707-3-7.jpg?t=%E8%8B%B1%E8%AF%AD%E7%BF%BB%E8%AF%91A+tennis+ball+thrown+horizontally+from+the+top+of+a+water+tower+lands+20m+from+the+base+of+the+tower.if+the+tennis+ball+is+initially+thrown+at+a+velocity+of+10m%2Fs%2Chow+high+is+the+water+tower%3FHow+long+does+it+take+the+tennis+ball+to+reach)
英语翻译A tennis ball thrown horizontally from the top of a water tower lands 20m from the base of the tower.if the tennis ball is initially thrown at a velocity of 10m/s,how high is the water tower?How long does it take the tennis ball to reach
英语翻译
A tennis ball thrown horizontally from the top of a water tower lands 20m from the base of the tower.if the tennis ball is initially thrown at a velocity of 10m/s,how high is the water tower?How long does it take the tennis ball to reach the ground?
英语翻译A tennis ball thrown horizontally from the top of a water tower lands 20m from the base of the tower.if the tennis ball is initially thrown at a velocity of 10m/s,how high is the water tower?How long does it take the tennis ball to reach
从水塔距地面20米处的地方水平抛出的一个网球,如果初速度10 m / s,问水塔有多高?需要多长时间到达地面?
从水塔顶部水平扔一个网球,落地距离塔基20米,如果球初速10m/s,水塔有多高?多久到达地面?
一个网球从水塔顶部水平抛出,落在距塔底20m处。若网球的初速度为10m/s,塔高多少?球多久落地?
落地时间t=V2h/g
由落地前水平飞行距离s=vt=20得t=2,则
V2h/g=2
h=20m
即,塔高20米,球用2秒落地。
将一个网球从离地面20米的水塔扔下,如果球最初投掷的速度为10m/s。问水塔多高,球到达地面需要多长时间?如果满意的话求采纳吧!
◆一个网球从一个塔顶水平抛出,着地后距塔基为20米。如果网球以10 m / s的初速度抛出,问,水塔有多高?网球需要多长时间可到达地面?