kinetic pump

例句：

1. 1. The kinetic energy of the projectile is equal to its mass times the square of the velocity.
   投射物的动能等于其质量乘以速度的平方。
2. 2.The kinetic force between two objects is proportional to their relative velocity.
   两个物体之间的动量力与它们的相对速度成正比。
3. 3.The kinetic energy of a ball thrown into the air is calculated using the formula E = 1/2 m v^2, where E is the kinetic energy, m is the mass of the ball, and v is the velocity of theball.
   将球抛入空中时，动能的计算公式为E = 1/2 m v^2，其中E是动能，m是球的质量，v是球的速度。