A ball is thrown straight upward (along the y-axis) with an initial velocity of

Question

A ball is thrown straight upward (along the y-axis) with an initial velocity of 12 m/s from the top of a building located 20 m above ground. Find the maximum height of the ball. In other words, find the ball's maximum distance from the ground. Be aware that once you find the maximum displacement by using the equations of motion, you will then add the starting height to your answer since the ball was not on the ground when it was thrown.
Hint: The velocity is 0 at its maximum height.
24.24 m
25.39 m
26.04 m
27.34 m
28.44 m

Explanation / Answer

use d = ½v²/g so d=12x12/(2x9.8) =7.34 to find distance above the top of the building, and add 20 to that. so the answer is 27.34

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