A 2,000-kilogram automobile accelerates horizontally to a speed of 20 m/sec. The change in its potential energy is: (Hint: the question did not ask you for the potential energy. It asked you how much the potential energy changed when it increased speed)

Most energy in an ecosystem comes originally from_

The heliocentric and the geocentric models of the solar system included these central principles

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?