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When a ball is thrown up, it reaches a m...

When a ball is thrown up, it reaches a maximum hetght (h) travelling (5 m) in the last second. Find the velocity with which the ball shoud be throun up.

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Every ball will travel a distance of `5 m` in the last second of going up to its highest poit, provided its velocity is greater than `10 m s^(-1)` initially (it should at leas travel a maximum height of `5 m`).
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