Jeremiah is riding his bicycle to the east. it takes him 10 seconds to change his velocity from 10 m/s to 15 m/s. what is jeremiah's acceleration? 5 m/s 5 m/s/s 0.5 m/s 0.5 m/s/s

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?