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18 June, 19:39

A rock is thrown 1.8 meters in the air. Find out how fast it was thrown?

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  1. 18 June, 21:10
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    Final velocity (v) ² = initial velocity (u) ² + (2*acceleration (a) * distance (s))

    v=0 m/s, u=?, a = 9.8 m/s² and s = 0.8 m

    u²=2*9.8*0.8=15.68

    u=3.959 ≈ 3.96 m/s
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