we can use V to refer to the velocity when the stone falls the first half distance.
To the last half of its distance we can write the equation:V*T+(1/2)gT²=(1/2)h
In this equation ,T=4s,g=10m/s²
To the last half of its distance we can write two equation:(1/2)gT'²=(1/2)h
and g*T'=V
Use these three equation we can work out the T(all)=T+T'=4+4√2+4=8+4√2s
A stone is dropped from a height h and falls the last half of its distance in 4s .what was the total time of fall
A stone is dropped from a height h and falls the last half of its distance in 4s .what was the total time of fall
英語(yǔ)人氣：546 ℃時(shí)間：2020-06-03 22:50:48
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