Answer to Question #192028 in Algebra for Katie

Question #192028

A watermelon is launched from a 25-foot tall platform at a carnival. The watermelon's height h (in feet) at time t seconds can be modeled by the equation h = -16t^2 + 56t + 25. Find the maximum height of the watermelon

1
Expert's answer
2021-05-12T01:52:27-0400

We have given the equation of height,


h(t)=16t2+56t+25h(t) = -16t^2+56t+25


h(t)=32t+56h'(t) = -32t+56

For maximum height,


h(t)=0h'(t) = 0


Hence,


32t+56=0-32t+56 = 0


t=5632=1.75st = \dfrac{56}{32} = 1.75s


at t=1.75st = 1.75s


Maximum Height =16(1.75)2+56(1.75)+25= -16(1.75)^2+56(1.75)+25


=28+98+25= -28+98+25


=95feet= 95feet


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