Friday

October 24, 2014

October 24, 2014

Posted by **Amy** on Thursday, April 18, 2013 at 8:02pm.

h = -17t^2 + 40t + 25

- Algebra -
**Amy**, Thursday, April 18, 2013 at 8:03pmI meant -16t^2

- Algebra -
**Reiny**, Thursday, April 18, 2013 at 8:44pmyour opening function should be

h = -16t^2 + 40t

h is supposed to have a value of 25

25 = -16t^2 + 40t

16t^2 - 40t + 25 = 0 , looks like a perfect square

(4t - 5)^2 = 0

4t = 5

t = 5/4

it will take 5/4 seconds

I don't know what "vertical motion model" means, never heard that term

**Answer this Question**

**Related Questions**

Math - An object is launched upward from the ground with an initial vertical ...

Algebra - THe function h(t)=-16t^2+v0t+h0 describes the height in feet above the...

Algebra - THe function h(t)=-16t^2+v0t+h0 describes the height in feet above the...

Algebra II - If an object is propelled upward from a height of 16 ft at an ...

math - an object is thrown upward from the top of a 80-foot building with a ...

Applied Calculus - If an object is launched straight up into the air from a ...

Applied Calculus - If an object is launched straight up into the air from a ...

Math - If an object is launched straight up into the air from a starting height ...

college algebra - The height of an object thrown upward with an initial velocity...

Math - A model airplane is shot up from a platform 1 foot above the ground with ...