Determining final velocity using initial velocity and displacements in a ramp question.

A 5 kg bowling ball is rolled back to the bowler over a ramp system.  If the ball is given an initial velocity of 0.6 m/s at its starting point's height which is 100 cm, what is the balls velocity at its ending point at 40 cm, after going over a height of 45cm first? So the ball leaves the first position goes through a dip up to 45 cm and ends at 40 cm.