______ occurs when an object's position changes when compared to another object.
The object that is used for comparison to determine whether something is in motion is called a
A push or pull is called a ______.
Which is NOT an example of a noncontact force?
The contact force that two surfaces exert on each other when they rub against each other is called _________.
A noncontact force that pulls objects toward each other as a result of their masses is called _____.
The SI unit used to measure force is called a ________.
The unit used to measure force is named after
Even when your feet are not touching the ground, ___________ pulls you toward the Earth's surface.
A girl exerts force on the pedals of a bicycle and the friction between the tires and the road help to keep the bike from slipping. Both the force on the pedals and friction are ___________ forces.
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