Aphysics student who is studying velocity and acceleration makes the following statement: “if an object is slowing down, its speed is gradually decreasing. that means that it’s acceleration must be negative.” would you agree with this statement?

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?