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Math

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The Height of a ski jumper, 'h' in meters is given by the equation h=-4.9t^(2)+0.5vt+8 where 't' is measured in seconds after leaping from the ramp and 'v' is his/her speed at the time of the jump.

a)If the jumpers' maximum height is reached is 16 m, determine the initial velocity.
b)Determine the 'Hang time' of the jumper(the time he/she was in the air). Assume the ground is level.

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