# An object is thrown vertically from a height of #2 m# at #15m/s#. How long will it take for the object to hit the ground?

##### 1 Answer

Sep 8, 2016

Approximately

#### Explanation:

For a distance,

In this case

So we have

#color(white)("XXX")-2.0" m" = 15.0t " m" + (-9.8t^2)" m"

Using the quadratic formula:

The negative value can be ignored as extraneous.