物理學問題~

迎面相撞比較嚴重

Let v be their volocity

The collision volocity in the first case is v-(-v) = 2v
That in the second case is v-0 = v

So case I has a higher collision speed, so the contact force is higher, that is, 損傷會比較嚴重

當然是兩架以反方向互相碰撞.(迎面相撞)損傷會比較嚴重.