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?
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.