A 0.20kg puck moving at 3.0m/s on a horizontal frictionless surface collides and sticks to an identical puck at rest. Immediately after the collision the two-puck system slides up a smooth ramp. What is the maximum vertical height the system reaches above the point of collision?
a) 0.23m
b) 0.06m
c) 0.12m
d) 0.46m