A bird is flying 77.0 meters above the ground, holding a stick with its feet. IF the bird were to drop the stick, how long would it take for the stick to reach the ground below? A.3.96 s
B.2.45 s
C.3.48 s
D.1.96 s

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.