A ball is thrown stright upwards with a speed v from a point h meters above the ground .Find the time taken for the ball to strike the ground.

A ball is thrown stright upwards with a speed v from a point h meters

1.	A ball is thrown stright upwards with a speed v from a point h meters above the ground .Find the time taken for the ball to strike the ground.
Answer» `V/g [1+sqrt(1+(2HG)/(v^(2)))]` `v/g [1-sqrt(1-(2hg)/(v^(2)))]` `v/g [1-sqrt(1+(2hg)/(v^(2)))]` `v/g [2+(2hg)/v^(2)]` ANSWER :A