throw ball up and make it fall

Hi, I am trying to throw a ball up in specific position and then make the fall down, I tried doing this by using:

apply impulse toward position(up)and

wait 2 seconds

apply impulse toward position(down)

it works good but the problem is the ball keeps going down and I want to end the ball to go down if it hit another object, how I can do this ?

any help will be appreciated.