Look at the velocity versus time graph below. What is the magnitude of the displacement of the object after it travels for three seconds? A. 14 m
B. 10 m
C. 12 m
D. 16 m

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.