How much time did it take the rock to reach the roof

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As part of a Physics experiment, a student carefully leans out a window in a building and shoots a small rock straight up using a slingshot. The window is known to be 22.3 meters below the flat roof of the building. A second student on the roof measures the rock when it reaches the roof level to have a velocity of 20.2 mi/hr upward.

How much time did it take the rock to reach the roof level after the shot?

With what velocity did the rock pass the window on its way back down to the ground below?

If a third student measured a total time of 5.85 seconds seconds between the launch and the rock striking the ground next to them, what is the height of the window above the ground?

Reference no: EM132802502

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