Newton's Third Law of Motion
Colliding Cars and "Rocket" Balloon
Cars of various masses and bumpers are allowed to collide on a level air track, and a rocket car and a rocket balloon are demonstrated.
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- Air track
- Air track cars of the same mass, different masses, and different bumpers
- Rocket balloon car
- Rocket balloon
Description
Cars of various masses and bumpers are allowed to collide in pairs on a level air track. Also, small "rocket" balloons are demonstrated to show the action and reaction forces in Newton's third law.
Roller Board
A person standing on a roller board pushes against the wall or pushes or pulls against another person.
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- Roller board
Description
A person stands on a rectangular board which has roller skate wheels attached. As the person pushes away from a fixed wall, or pushes (or pulls) on another person, the forces of action and reaction are demonstrated.
Car on Road
A car accelerates on a surface which is capable of moving.
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Remote control car
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A long wooden track
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Steel roller rods
A remote-control car is set to accelerate while on a movable surface. As the movable surface pushes the car forward, the car pushes the surface backward and sets it in motion. Also, as the car brakes to a stop, the surface is pushed forward by the car, while the surface pushes backward on the braking car.