SOLUTION: A tennis ball is hit into the air. The height of the ball, h(t), in feet, at time t, in
seconds, is modeled by the equation h(t) = -16t
2 + 64t + 4. Determine the
interval of
Algebra ->
Rational-functions
-> SOLUTION: A tennis ball is hit into the air. The height of the ball, h(t), in feet, at time t, in
seconds, is modeled by the equation h(t) = -16t
2 + 64t + 4. Determine the
interval of
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Question 1169811: A tennis ball is hit into the air. The height of the ball, h(t), in feet, at time t, in
seconds, is modeled by the equation h(t) = -16t
2 + 64t + 4. Determine the
interval of time when the height of the ball is greater than or equal to 52 feet? Answer by ikleyn(52805) (Show Source):
Solve the equation
-16t^2 + 64t + 4 = 52.
Its roots are time moments when the ball will be at the height of 52 ft above the ground.
Then from the greater root subtract the smaller root.
It will gives you the time interval.
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