kinetic muscle

例句：

1. 1. The kinetic energy of theprojectile is equal to its mass timesthe velocity squared.
   投射物的能量等于其质量乘以速度的平方。
2. 2. Thekinetic energy of a ball thrown into theair is proportional to its initial velocity.
   将球抛出后，它的动能与初始速度成正比。
3. 3. The kinetic energy of thewind is used to lift objects and propel them through the air.
   风的动能被用来举起物体并推动它们在空中移动。