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Newton's Laws of Motion Vocabulary
newton's first law of motion
Law of InertiaAn object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by an unbalanced force.
EX: If a car is travelling at 60mph, you are as well. If the car suddenly stops you will continue to move forward (this is why seatbelts are important) because you are in motion and an object in motion will remain in motion.
EX: If a car is travelling at 60mph, you are as well. If the car suddenly stops you will continue to move forward (this is why seatbelts are important) because you are in motion and an object in motion will remain in motion.
newton's second law of motion
F=maThe force acting on an object is equal to the mass of that object times its acceleration.
As mass increases, acceleration decreases (if force stays the same).
EX: Pushing an adult on a swing vs. pushing a child on a swing.
As mass increases, acceleration decreases (if force stays the same).
EX: Pushing an adult on a swing vs. pushing a child on a swing.
newton's third law of motion
Equal and OppositeFor every action, there is an equal and opposite reaction.
EX: A rocket blasting off into space.
EX: A rocket blasting off into space.
inertia
The resistance to change. The more mass an object has, the more resistant an object is to change and so the more inertia is has.
Ex: It is harder to make an elephant move than a dog, the elephant has more inertia (more resistance to change)