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A rock is dropped from the roof and hits the ground with a speed of 24m/s.
1. From what height was it dropped and how long did it take to hit the ground?
2. Sketch graphs for height (y), speed (v), and acceleration (a) all versus time (t) for the rock
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two identical guitar strings are prepared such that they have the same length 2.30 m and are under the same amount of
Find out the magnitude and direction of the initial velocity.
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