Two balls are thrown from the same point on a roof of a building with velocities (ui +7i) m/s and ((u +3)ỉ +7j) m/s respectively. The balls hit the ground 9 meters apart. Find the height of the building.
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A: + B v = v0 + act 15 = 0 + 0.5625t t = 26.7 s Ans. 12–2. A train starts from rest at a station and travels with a constant acceleration of 1 m>s2. Determine the velocity of the train when t = 30 s and the distance traveled during this time. Kinematics: ac = 1 m>s2, v0 = 0, s0 = 0, and t = 30 s.
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24m
Explanation:
The answer is 24m.
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