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

User Jacky Nguyen
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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
User Glenebob
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