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A particle is projected vertically upwar...

A particle is projected vertically upwards from a point O on the ground. It takes time `t_(1)` to reach a point `A` at a height h above the ground, it continues to move and takes a time `t_(2)` to reach the ground. Find (a) h, (b) the maximum height reached and (c ) the velocity of the partical at the half of maximum height.

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