An object is thrown upwards at time t = 0. The object's height, fin feet, t seconds later is given by the formula below: f (t) =

Question

An object is thrown upwards at time t = 0. The object's height, fin feet, t seconds later is given by the formula below:
f (t) = -16t² + 128 t
=
Answer the following. Note: When relevant, keep your answers exact. Decimal approximations will be marked as incorrect.
(a) Determine the height of the object t = 0.8 seconds after it was launched.
Answer: 92
feet
(b) Determine the number of seconds required for the object to reach a height of 3 ft on its way up.
128 + √16192
32
t =
seconds

Kunduz · Accepted Answer

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