Number these from least (1) to most (5) inertia. A baseball
A small car
A truck
A feather
A large train

Aball horizontally thrown from a cliff at 8m/s

How do you know how many valence electrons an atom has?

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?