A rock is thrown upward with a velocity of 25 meters per second from the top of a 21 meter high cliff, and it misses the cliff on the way back down. When will the rock be 11 meters from the water below? Round your answer to two decimal places.

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Jamar FerryLv2

25 May 2019

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a ball is thrown upward with an initial velocity of 35 meters per second from a cliff that is 90 meters high. the height of the ball is given by the quadratic equation h=- 4.9t2+35t+90. where h is in meters and t is the time in seconds since the ball was thrown. find the time it takes the ball to hit the ground. round your answer to the nearest tenth of a second.

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please show work.

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