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 Newton's laws  Newton's third law applies to two bodies.  Third law force pairs | ||||
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RATINGS: Sites are rated from 1 owl (good) to a high of 5 owls. Read more- NASA Video: Toys in Space 2
Astronauts have to go through hours of grueling physical and mental training. But when they get up to space, it's playtime! This NASA website introduces microgravity and has a half-hour video of shuttle astronauts playing with tons of toys in microgravity. Without gravity acting on the toys, Newton's third law becomes much more obvious. (RealPlayer required)
- Dynamics and Newton's Laws
Kicking a bowling ball hurts because the ball pushes back with a force equal to the force striking it. This behavior illustrates Newton's third law. The Phlying Physicists address all three of Newton's laws in this concise, illustrated webpage, hosted by ThinkQuest and part of the Live the Physics site.
- Rocket Principles
Hey, this is rocket science. Without the balanced and unbalanced forces described by Newton's third law, space travel wouldn't be possible. As exhaust shoots out the back of the rocket, the equal and opposite force propels the rocket forward. This NASA website explores Newton's laws by way of rocket science.
- The Physics Classroom
A cartoon of apples pulling each other around on wheels bizarrely illustrates Newton's third law. Despite (or because of) the wacky drawings, this high school webpage successfully conveys the idea that for every action, there is an equal and opposite reaction. There's even a quiz at the bottom.
- Amusement Park Physics: Colliding Cars
Colliding bumper cars are the perfect vehicles for exploring the effects of Newton's second and third laws of motion at this Annenberg/CPB website. Visitors can read the introductory text, then click on "Colliding Cars" to test their ability to apply the law in predicting the outcome of collisions.
The Third Law: Forces in Pairs
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