Saturday

January 31, 2015

January 31, 2015

Posted by **Honey** on Monday, April 30, 2012 at 5:47pm.

Round answer to 2 decimals Enter: blank ft,blank sec.

- Algebra 2 -
**Reiny**, Monday, April 30, 2012 at 5:53pmthe equation is

height = -16t^2 - 5t + 300

so when t=2

height = -16(4) - 5(2) + 300

= 226 ft

to hit the ground, height =0

0 = -16t^2 - 5t + 300

16t^2 + 5t - 300 = 0

t = (-5 ± √19225)/32

= 4.176.. or a negative, of course negative time would be inadmissable

it would take appr 4.18 seconds to hit the ground

**Answer this Question**

**Related Questions**

Algebra 2 - If an object is thrown vertically upward with an initial velocity of...

Physics - A helicopter is ascending vertically with a speed of 4.50 m/s. At a ...

physics - A helicopter is ascending vertically with a speed of 6.50 m/s. At a ...

Physics - A helicopter is ascending vertically with a speed of 5.20 m/s. At a ...

physics - A helicopter is ascending vertically with a speed of 4.50 m/s. At a ...

phy - A helicopter is ascending vertically with a speed of 5.50 m/s. At a height...

Physics - A helicopter is ascending vertically with a speed of 3.00 m/s. At a ...

Physics - A helicopter is flying in a straight line over a level field at a ...

Scientific studies - A helicopter is ascending vertically with a speed of 5.20m/...

physics - A helicopter is flying in a straight line over a level field at a ...