Awater skier is pulled by a net force of 171 N and has an acceleration of 1.9 m/s2. What is the mass of the skier? OA. 80 kg
ОВ. .
34.2 kg
OC. 90 kg
OD. 100 kg

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.