Question: 3. A stone is thrown upward with an initial velocity of 100 m/s from the roof of a building whose height is 20 meters. Determine;

3. A stone is thrown upward with an initial velocity of 100 m/s from the roof of a building whose height is 20 meters. Determine; a. The stone's velocity at t = 2 seconds b. The time required to return to rooftop level 0. The maximum height (1. The stone's position just before it reaches the ground I e. The stone's total time of ight

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