An object is thrown vertically from a height of #2 m# at #4 m/s#. How long will it take for the object to hit the ground?
We know when it attains maximum height it Final velocity will be zero .
time taken to attain maximum height is =
which is =
now distance traveled upward
now it again falls from that height to ground which is
now time taken to hit the ground is taken by eq 2
so we will add (1) and (2) to get our answer we get=