A stone is allowed to fall from the top of a tower `300m` height and at the same time another stone is projected vertically up from the ground with a velocity `100ms^(-1)`. Find when and where the two stones meet?

Explanation

Suppose the two stones meet at a height x from ground after t seconds.
`x=100t-(1)/(2)g t^(2)…..(1)`
`300-x=0+(1)/(2)g t^(2)…..(2)`
Solve 1, 2
`t=3` sec, `x=255.9m`