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QUESTION6: A stone is thrown vertically upwards at a speed of 12 m / s. After...

QUESTION6: A stone is thrown vertically upwards at a speed of 12 m / s. After exactly 1.0 s, a ball is thrown vertically at 18.0 m / s along the same path.

a) When will they crash into each other

b) At what height will the collision occur?

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