posted by Tzana .
Please help...I know the direction is up, but I can't figure out the magnitude, except that its label is kg · m/s, I think.
A 0.400-kg ball is dropped from rest at a point 1.80 m above the floor. The ball rebounds straight upward to a height of 0.730 m. What are the magnitude and direction of the impulse of the net force applied to the ball during the collision with the floor?
nevermind, figure it out!