Saturday

March 28, 2015

March 28, 2015

Posted by **bill** on Sunday, March 7, 2010 at 10:14pm.

a. Determine a function for the height of the projectile t seconds after it’s released.

b. How long does it take the projectile to reach of height of 100 feet on its way up?

c. How long is the projectile in the air?

- math -
**Reiny**, Sunday, March 7, 2010 at 10:53pmheight(t) = -16t^2 + 860t + 7

b) solve 100 = -16t^2 + 860t + 7 and use the smaller of the two t values you find

c) set height(t) = 0 and solve

**Answer this Question**

**Related Questions**

pre-calc - analyzing the motion of a projectile: a projectile is fired from a ...

College Algebra - A projectile is thrown upward with an initial velocity of 272 ...

Intermediate Algebra - If a projectile is fired straight upward from the ground ...

Math - A projectile is fired straight up from a cliff which is 200 feet above ...

Physics - A projectile is fired straight up from a cliff which is 200 feet above...

calculus - The height of a projectile launched into the air is given by h (t)= -...

algebra - The height in feet of a projectile with an initial velocity of 32 feet...

intermediate algebra - A projectile is launched directly upward from the top of ...

math - If a projectile is launched from a platform 30 feet high with an initial ...

math - The height of a projectile fired upward is given by the formula s = v0t...