A force changes the motion of a moving object.

力改变移动对象的运动。

Would you like to change your motion?

你们想改变动议吗？

His first law states objects  in motion must remain in motion until another force changes that motion.

他的第一定律规定运动中的物体必须保持运动状态，直到另一个力改变该运动。

The mission is headed for a near-earth asteroid named Didymos and it's moonlit, and the goal is to slam into the moon and change the asteroid's motion in space.

这次任务的目标是一颗名为Didymos的近地小行星，它靠近月球，目标是撞击月球，改变这颗小行星在太空中的运动。