A car with a mass of 195.2kg rounds an unbanked curve in the road at a speed of 45.1m/s. If the radius of the curve is 49m, what is the average centripetal force exerted on the car?

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.