If you solve for that, you find y-y0=v0^/, and if you put in the v_0 I gave you, which was what, 10?

如果你解这个式子,你会得到y-y0=v0^/,如果再把我给你的v0代入,那个数是多少 10

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For example, if t* is the time you hit the ground, then t* satisfies the equation h - 1/2 g ^2 = 0.

例如,如果在 t* 时刻落地,那 t* 就满足等式 h - 1/2 g ? ^2 = 0

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Or I'm canceling the 5 everywhere and changing the sign here I get t^-2t-3=0.

或者我在等号两边除以5,并变号得到t^-2t-3=0

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Therefore, you say 0^=v0^-2g, that's my acceleration, times .

因此 你得到0^=v0^-2g,这里是加速度,再乘以

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I ask when y=0, then I say 0=15+10t-5t^.

我问何时y=0,然后得到0=15+10t-5t^

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