What makes a bird fly? A person run? A judo expert flip a heavier opponent? Earth orbit the Sun? These and any other motions are governed by three deceptively simple laws first stated by Isaac Newton in the seventeenth century. These three laws of motion when coupled with Newton's law of gravity form the basis for explaining both the motions we see on theearth and the motions of the heavenly bodies.
Slide a block of wood across a level uncarpeted floor and notice its behavior. The block continues to move as long as you apply a force. When the force stops, the block stops moving. The block will continue to slide for a while after you stop applying a force. Your pushing is not the only force acting on the block. There is also a frictional force opposing the motion. The block sliding across the …
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User Comments
11 months ago
camri morgan
YALL NEED TO LEARN HOW TO SPELL.!!! theearth.? umm excuse me.? and this is NOT background on this topic, BTW.!
thanks:),
camri morgan:)
2 months ago
this is a horrible website D: