U3.L4.HW: Quadratic Functions: Question 26

Question

A cannon ball is launched into the air with an upward velocity of 195 feet per second, from a 6-foot tall cannon. The height h of the cannon ball after t seconds can be found using the equation h = -16t² + 195t + 6.

Round all answers on both questions below to the nearest tenth if necessary.

Approximately how long will it take for the cannon ball to be 240 feet high?

__________ units: _____________

How long long will it take to hit the ground?

___________ units: ___________

Answer 1

Use the quadratic function to solve for t

-16t²+195t-234 = 0

and for

-16t²+195t+6=0

The units will be seconds