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Question

# When a ball is thrown vertically upwards, it reaches a maximum height of 5m. The initial velocity of the ball was ?

A
5 m/s
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B
50 m/s
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C
10 m/s
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D
25 m/s
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Solution

## The correct option is C 10 m/sAnswer is C.The equation is given as v2−u2=2as.where,v = final velocity, u = initial velocity, a = acceleration due to gravity, 10m/s2, s = h = height traveled.Therefore, we can find u with above info. In this case, v = 0 at the top of the path.0−u2=2×10×5=10m/s.Hence, the initial velocity of the ball was 10 m/s.

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