所有讀physics 人都是 Mgh=1/2 mv^2

謮physics ，應該要親身體驗地心吸力

以a=g 從高樓降下

冇空氣阻力先係

+Rs

地面正以9.81ms^-2的加速度上升

所以我磅重要減返9.8g?

Two students ,Tom and Tim,Tim jump from the top of a building(500m) at t=0s ,Tom jumps 3.5seconds later from the middle of the building. Find the separation from two students and the ground when they meet.（g=9.81,air resistance is negligible)

g=10