Motion is..., movement., Force is, a push or pull that acts on an object., If force acts upon an object, it will change it's..., position or location., Gravity, the force that pulls things down toward the surface of the Earth and keeps them from floating away into space., Friction, a force that makes things slow down or stop., Friction is greater between..., rough surfaces., Friction is less between..., smooth surfaces., Inertia, an object in motion will stay in motion, or an object at rest will stay, Changes in gravity, friction, or mass will affect..., the motion of an object., Two forces that work against inertia, gravity and friction, All matter..., has mass and takes up space., Objects with more mass need..., more force to move.

Force & Motion

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