What is the mass of a cannonball if the force a force of 2500 n gives the cannonball an acceleration of 200 m/s^2? ? a) 12.5 kg b) 15.0 kg c) 20 kg d) 25 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.