if you know the time it took an object to travel between two points and the position of the object at the points, can you determine the object's instantaneous velocity

Match each scenario to the form of energy it represents

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?

Atoms in a molecule are bonded together by sharing gaining or losing_