The reactionforce to this action force pushes rocket ship along.
这个作用力所产生的反作用力推动宇宙飞船前进。
2
Objective: To investigate the effect of shoe heel height on the ground reactionforce and the center of sole force.
目的：通过研究女性行走时地面反力和鞋底压力中心，探讨鞋跟高度对地面反力和鞋底压力中心的影响。
3
If an arm is stretched forward under water resistance is increased and a reactionforce back ward is developed both of which would contribute to negative acceleration.