Mr. moyers class was studying how work is done on an object in which situation is the amount of work done on the object equal to zero? A shopper pushes a cart with a broken wheel. B a person pushing a heavy box and unable to move it. C an apple growing on a tree and falls to the ground. D and athletes swing a bat into the air without hitting anything

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s