Answer to Question #299597 in Physics for Good heart

Question #299597

A stone is thrown straight upwards and it rises to a maximum height of 20m. With what speed was it thrown?

Expert's answer

The maximum height

"h_{\\max}=\\frac{v_0^2}{2g}"

The initial speed

"v_0=\\sqrt{2gh_{\\max}}=\\sqrt{2*9.8*20}=19.8\\:\\rm m\/s"

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