Question: Problems 23 through 28 explore the motion of projectiles under constant acceleration or deceleration. A projectile is fired straight upward with an initial velocity of

Problems 23 through 28 explore the motion of projectiles under constant acceleration or deceleration.

A projectile is fired straight upward with an initial velocity of 100 m=s from the top of a building 20 m high and falls to the ground at the base of the building. Find

(a) Its maximum height above the ground;

(b) When it passes the top of the building;

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