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Forces and Energy (Work (Work=Fd (Force times distance) (Work is measured…
Forces and Energy
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Newton's First Law
"Every object persists in its state of rest or uniform motion in a straight line unless it is compelled to change that state by forces impressed on it."
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Newton's Second Law
"Force is equal to the change in momentum (mV) per change in time. For a constant mass, force equals mass times acceleration."
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Acceleration is based on Net Force acting on the object, and inversely on the mass of the object
If force increased, acceleration increased
If mass increased, acceleration decreased.
Example: If you are launching a heavier rocket and a lighter rocket with the same amount of force, the lighter rocket would go higher faster. Since the other rocket is heavier, you would need more force to make it launch higher at the same speed as the lighter rocket.
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Newton's Third Law
"For every action, there is an equal and opposite reaction."
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Example: As water and air is pushed out from the bottle rocket due to pressure, this creates an opposite force which pushes the rocket upwards.
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