Projectile motion - height of ball thrown 15 ft off the ground

Question: Ball thrown up at speed 91feet/sec from height of 15 feet off the ground.The height h of ball after t seconds found with equation h=−16t^2+91t+15.When height be 102 feet?When will ball reach ground?
An object is thrown upward at a speed of 91 feet per second by a machine from a height of 15 feet off the ground. The height h of the object after t seconds can be found using the equation h = − 16t^2 + 91t + 15 When will the height be 102 feet? When will the object reach the ground?

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Answered By:

Timothy D.
B.S. in Physics with 1 year Tutoring Experience

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