Posted by **Joe** on Thursday, April 15, 2010 at 6:21pm.

When a soccer ball is kicked with a vertical speed of 25 m/s its height, h metres, after t seconds is given by the equation h=-5t^2+25t

a) how long after it is kicked is the soccer ball at a height of 30 m ?

b) How long is the soccer ball in the air?

## Answer this Question

## Related Questions

- Physics - 2-D kinematics - A soccer ball is kicked with an initial horizontal ...
- math - A soccer ball is kicked upward from the ground and its height (in metres...
- algebra 1 NEED NOW!!! PLEASE HELPPP - The height of a soccer ball that is kicked...
- algebra 1 NEED NOW!!! PLEASE HELPPP - The height of a soccer ball that is kicked...
- Physics - A soccer ball is kicked with an initial horizonal velocity of 18 m/s ...
- science - A soccer ball is kicked with an initial speed of 8.4 m/s in a ...
- math - The height of a soccer ball that is kicked from the ground can be ...
- AP Physics - A soccer ball is kicked with an initial speed of 19.6 m/s in a ...
- math - Mariano is standing at the top of a hill when he kicks a soccer ball into...
- Physics - A football is kicked from the ground at 27 m/s at an angle of 42 ...

More Related Questions