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8. [-/4 Points] DETAILS LARCALCET8 4.2.033. The height of a ball t seconds after it is thrown upward from a height of 5 feet and with an initial velocity of 48 feet per second is f(t) - - 16 + 486 + 5. (a) Verify that f(1) = f(2). f(1) = ft f ( 2 ) = ft (b) According to Rolle's theorem, what must be the velocity (in ft/sec) at some time in the interval (1, 2)? ft/sec Find that time (in seconds). t = S Need Help? Read It Watch It Submit