Problema Solution
A model rocket is launched with an initial upward velocity of
195ft/s The rocket's height h (in feet) after t seconds is given by the following.
h= 195t-16t^2
Find all values of t for which the rocket's height is 87 feet.
Answer provided by our tutors
we need to find t such that h(t) = 87 ft
since h(t) = 195t - 16t^2 we have
195t - 16t^2 = 87
by solving we find all values of t for which the rocket's height is 87 feet:
t1 = 0.46 sec
t2 = 11.72 sec
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