Homework Help


QThe formula h=-16t^2+vt gives the height h in feet of an object after t seconds when it is shot upward into the air with a velocity v in feet per second

The formula h=-16t^2+vt gives the height h in feet of an object after t seconds when it is shot upward into the air with a velocity v in feet per second. After how many seconds will an object hit the ground if it is shot upward with an initial velocity of 240 feet per second?

1 answers

This question still have no answer summary yet.
#1sweetyAnswered at 2014-05-06 15:57:42
The formula h=-16t^2+vt gives the height h in feet of an object after t seconds when it is shot upward into the air with a velocity v in feet per second. After how many seconds will an object hit the ground if it is shot upward with an initial velocity of 240 feet per second? : Replace h with 0 and v with 240, write the equation: -16t^2 + 240t = 0 Simplify and change the sign, divide by -8 2t^2 - 30t = 0 Factor t(2t - 30) = 0 Two solutions t = 0 (at ground level initially) and 2t = 30 t = 15 sec to hit the ground : : Check this in the original equation -16(15^2) + 240(15) = -16(225) + 3600 = 0
Anonymous Sign In Sign Up
Add Answer of
The formula h=-16t^2+vt gives the height h in feet of an object after t seconds when it is shot upward into the air with a velocity v in feet per second

Did this answer your question? If not, ask a new question.

Related Answers