A boy throws a ball vertically upward with an initial velocity of 3 m/s from the roof deck of a building. The ball strikes the sidewalk at the ground level after 4 seconds. What is the velocity with which the ball strikes the ground? Explanation not needed.
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8 \, \text{m/s}^2 \) (downwards) Time taken, \( t = 4 \, \text{s} \) ** Show more…
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