Question

I've got part A, can someone help me out?
-16t^2+50t+90 is the equation and answer to Part A.
Part B: What is the maximum height that the projectile will reach? Show your work.

Answer 1

have you done any calculus
finding derivatives?

Answer 2

a little bit i guess

Answer 3

you need to
differentiate the above function and equate it to zero then solve for t

Answer 4

i got 1.5625

Answer 5

this will give you the value of t when projectile is at maximum height
you then plug this into the original function of t

Answer 6

-32t + 50 = 0
t = 50/32 = 1.5625

now plug this into -16t^2 + 50t + 90

Answer 7

-16(1.5625)^2+50(1.5625)+90 = 129.0625 would that be correct?

Answer 8

129.06?

Answer 9

yes

Answer 10

okay thank you! :)