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Hovercraft Demo

# Hovercraft Demo - are unbalanced then a force will be...

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Hovercraft Demo Newton’s First Law (Law of Inertia) The hovercraft is an example of Newton’s first law. When the craft lifts off the ground, it stays about 6 inches off the ground because the force of the air is equal to the force of gravity. Then a person, or force, acts upon the hovercraft and it is pushed forwards. It does not stop because there is no friction so it will not change its velocity until a force acts upon it. When we turned off the vacuum, the hovercraft “landed” and the force of friction was applied, causing it to stop almost immediately. Newton’s Second Law The hovercraft is also an example of Newton’s second law, the law of acceleration. Basically, the rate of change of momentum of a body is proportional to the resultant force acting on the body and is in the same direction. In other words, if the forces upon an object
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Unformatted text preview: are unbalanced, then a force will be applied in the direction of the lowest force. Because there was no opposing force to hold the hovercraft in place when we pushed off, the craft glided along the hallway. Newton’s Third Law The hovercraft is lastly an example of Newton’s third law. For every action there is an equal and opposite reaction. When the hovercraft lifted off, the force of friction was no longer applicable to the craft. So when a person pushed the craft, the craft pushed back with the same amount of force but without friction to hold it in place, went gliding down the hallway. The person doing the pushing had frictional force on his side, and therefore did not move at all....
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