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Freefall Motion for which the only force acting is the force of gravity. It can be moving up or down. (Air friction is negligible) Negligible – So insignificant as to be unworthy of consideration

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Objects in freefall all have the same constant acceleration even though the force of gravity is different. FgFg FgFg a = -10 m/s 2

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0 txva 01250-10 1 2 3 4 5 -20 -30 -40 -50 120 105 80 45 0

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Graphical

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Algebraic

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Example 1: A ball is thrown straight up from a height of 5 meters with an initial velocity of 30m/s. What is the maximum height of the ball? 30m/s 5m

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Example 2: A ball is thrown straight up off a cliff with a velocity of 20m/s. How long will the ball be in the air and what will its velocity be just before it hits the ground? 20m/s v = 0m/s 12m

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