We have given the equation of height,
"h(t) = -16t^2+56t+25"
"h'(t) = -32t+56"
For maximum height,
"h'(t) = 0"
Hence,
"-32t+56 = 0"
"t = \\dfrac{56}{32} = 1.75s"
at "t = 1.75s"
Maximum Height "= -16(1.75)^2+56(1.75)+25"
"= -28+98+25"
"= 95feet"
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