The largest falls stemming from the Niagara River is the Horseshoe Falls or Canadian Falls. There were 15 attempts to go over the falls between 1901 and 1995
How could the speed at the base of the falls be determined using the conservation of energy theorem (AKE = APE)? (Assume an initial speed of
zero)

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.