Sunday

April 20, 2014

April 20, 2014

Posted by **Randi** on Saturday, October 20, 2012 at 9:19pm.

- College Alegbra -
**Reiny**, Saturday, October 20, 2012 at 11:13pmfrom your information, the height h is

h = -16t^2 + 54t +75 , where t is in seconds and h is in feet

dh/dt = -32t + 54

= 0 for a max h

32t = 54

t = 54/32 = 27/16 ---> time it took to reach max height = -16(27/16)^2 + 54(27/16) + 75

= 120.56 ft

h = -16(

**Related Questions**

physics - An arrow is short vertically upward with an initial speed of 25m/s. ...

Physics - An arrow is shot straight upward at 55 m/s. a) find the time until the...

Physics - An arrow is shot straight upward at 55 m/s. a) find the time until the...

Physics - An arrow is shot straight upward at 55 m/s. a) find the time until the...

Calculus - If an arrow is shot straight up from the surface of the moon with an ...

Physics - You shoot an arrow into the air. Two seconds later (2.00 {\rm s}) the ...

Phy - You shoot an arrow into the air. Two seconds later (2.00 {\rm s}) the ...

Physics - You shoot an arrow into the air. Two seconds later (2.00 {\rm s}) the ...

Physics - An arrow is launched vertically upward from a crossbow at 98.2 m/s. ...

Algebra - How would I work this? The equation h= -16t^2 +112t gives the height ...