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A projectile is launched straight up at 58.5 m/s from a height of 90 m, at...

A projectile is launched straight up at 58.5 m/s from a height of 90 m, at the edge of a sheer cliff. The projectile falls, just missing the cliff and hitting the ground below.

(a) Find the maximum height of the projectile above the point of firing.
m

(b) Find the time it takes to hit the ground at the base of the cliff.
s

(c) Find its velocity at impact.
m/s

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