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

耶鲁公开课 - 基础物理课程节选

Again, let t* be the time when you hit the ground.

设 t* 为落地的时间

耶鲁公开课 - 基础物理课程节选

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