force, a push or pull, direction, a force can change the speed and _________ of an object, speed, how fast or slow and object is moving, more, you must use ________ force when an object is heavier, wind, a powerful force in nature, Newton, scientist who explained gravity, three, number of Laws of Motion, inertia, object at rest will stay at rest, object in motion will stay in motion, unless acted on by a stronger force, mass, the greater the ________ the more force is needed to move the object, reaction, every action has an equal and opposite __________, acceleration, a change in speed, light, the speed of ________ is the fastest thing of all, friction, a force that acts in the opposite direction of movement, gravity, the force of attraction between 2 objects, magnetism, can push together or pull apart certain metals, attract, when magnets pull together, repel, when magnets push apart, electromagnet, magnets created by electricity, north, a north and ________ pole will repel, south, a north and _______ pole will attract

FORCE & MOTION

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