Posted by **Anon** on Sunday, December 9, 2012 at 9:16pm.

A kicker punts a football from 3 feet above the ground with an initial velocity of 47 feet per second.

Write an equation that gives the height (in feet) of the football as a function of the time (in seconds) since it was punted.

Find the height (in feet) of the football 2 seconds after the punt.

Calculate how many seconds after the punt the ball would hit the ground.

- math/algebra -
**Reiny**, Sunday, December 9, 2012 at 9:46pm
height = -16t^2 + 47t + 3

when t=2

height = -64 + 94 + 3 = 33 feet high

to hit the ground, height = 0

-16t^2 + 47t+3=0

16t^2 - 47t - 3 = 0

(t-3)(16t + 1) = 0

t = 3 or t = a negative, which is not valid

it will hit the ground after 3 seconds

## Answer this Question

## Related Questions

- math - A kicker punts a football from 3 feet above the ground with an initial ...
- Algebra 1 - A kicker punts a football from 3 feet above the ground with an ...
- Precalculus - The quarterback of a football team releases a pass at a height of ...
- Math - The quarterback of a football team releases a pass at a heights of 7 feet...
- Math/ Calculus Help1 - Supplies are dropped from a stationary (not moving up or ...
- 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...
- Maths/ Calc - Supplies are dropped from a stationary (not moving up or down) ...
- math - Please explain in detail so I can understand how to do it: A football ...
- Math - We are studying Quadratic formula: A football player punts a ball. The ...