Question: A stone is thrown vertically upward with a speed of 24.0 m/s. (a) How fast is it moving when it is at a height of

A stone is thrown vertically upward with a speed of 24.0 m/s.

(a) How fast is it moving when it is at a height of 13.0 m?

(b) How much time is required to reach this height?

(c) Why are there two answers to (b)?

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