The cause that changes the motion of an object is a force. A force is any interaction that, when unopposed, changes the motion of an object. Forces can be contact forces (like friction, tension, and normal force) or non-contact forces ...
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The cause that changes the motion of an object is a force. A force is any interaction that, when unopposed, changes the motion of an object. Forces can be contact forces (like friction, tension, and normal force) or non-contact forces ...