学习了牛顿定律后知道,力是物体间的相互作用。也就是说力是相互的,也就是说甲物体给乙物体一个作用的同时,乙物体也给甲物体一个作用力。我们把这两个力称为作用力和反作用力,甲、乙两个物体可称为施力物体或受力物体。如图 After learning Newton’s law, it is known that force is the interaction between objects. That is to say, the forces are mutual, that is to say that while the A object is acting on the B object, the B object also gives a force to the A object. We call these two forces force and reaction force. The two objects A and B can be called force objects or force objects. Pictured