Free Fall and Projectile Motion

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  Free Fall and Projectile Motion Mechanics  InNewtonian physics,free fallis any motion of abodywhere gravity is the onlyforceacting upon it. An object in the technical sense of the term free fall may not necessarily be falling down in the usual sense of the term. An object moving upwards would not normally be considered to be falling, but if it is subject to the force of gravity only, it is said to be in free fall. The moon is thus in free fall.  Example: ! A bullet fired straight upwards ! A satellite in stationary orbit ! A cannonball shot from a cannon  FREE FALL ! No air resistance. ! a = g = -9.81 m / s 2 ( ! -10 m/s 2 ) ! Dropped Vi = 0 m/s ! Thrown straight upVf= 0 m/s (at the top)V(leaves hand) = +5 m/sV(comes back to hand) = -5 m/s ! Time to the top = Time to come back down.

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Oct 8, 2019

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Oct 8, 2019
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