A wagon with an initial velocity of 2 m/s and a mass of 60 kg, gets a push with 150 joules of force. Apply your scientific knowledge and understanding of work-energy
theorem to calculate the wagon's final velocity.

PZZZ

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.