Wednesday

December 17, 2014

December 17, 2014

Posted by **Coach** on Monday, May 7, 2012 at 1:23pm.

Use the quadratic equation to determine how many seconds goes by before the ball hits the ground?

- algebra -
**Reiny**, Monday, May 7, 2012 at 1:42pmwhen it hits the ground, height = 0

16t^2 -25t=0

t(16-25) = 0

t = 0 , (at the beginning of the throw,

or

t = 25/16 seconds

btw, if the quadratic equation ax^2 + bx + c = 0 has c = 0

then there is no need to use the formula, because it will always factor into x(ax + b) = 0

**Answer this Question**

**Related Questions**

algebra - When a ball is thrown in the air, the height h of a ball in feet t ...

math HELP - When a ball is thrown in the air, the height h of a ball in feet t ...

Algebra - A ball is thrown into the air. The height in feet of the ball can be ...

Algebra - A ball is thrown into the air. The height h, in feet, of the ball can ...

algebra - A ball is thrown into the air with an upward velocity of 28 ft/s. Its ...

college - A blue ball is thrown upward with an initial speed of 19.8 m/s, from ...

math - a ball is thrown into the air at a speed of 96 feet/sec. The equation ...

maath HELPPPP - a ball is thrown into the air at a speed of 96 feet/sec. The ...

Algebra - A ball is thrown into the air with an upward velocity of 28 ft/s. Its...

Calculus - 1.if a ball is thrown into the air with a velocity of 35ft/s, it's ...