Newtons cradle. You know the ball barrings at the end of a wire?
2007-03-01 10:05:47
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answer #1
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answered by Anonymous
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A rocket. Initially it is at rest and so will normally continue to be at rest unless and until it is acted upon by an external force and in this case it is the ignition of the rocket motors. Once the motors start firing, the rocket goes up with an acceleration determined by the thrust, its own mass etc. and it could go up because the thrust of the exhaust gases is in the opposite direction.
A person in a boat rowing...there are many such examples which combine the 3 laws.
2007-03-01 18:12:09
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answer #2
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answered by Swamy 7
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1st Law
Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.
in plain English: Nothing moves or stops by itself
2nd Law
The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector.
in plain English: Objects go in the direction they are pushed.
The more force you apply, the more acceleration.
The bigger an object is = less acceleration.
3rd Law
For every action there is an equal and opposite reaction.
in plain English: You push, pull, hit, lean on, something then it will do the same to you. Except you can't feel it.............Don't ask me why THAT'S PHYSICS
2007-03-01 18:11:40
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answer #3
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answered by Anonymous
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1st law- rolling of a ball down a slope
2nd law-ball falling down
3rd law-two balls colliding each other
2007-03-01 18:09:30
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answer #4
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answered by harry potter 1
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