Match each form of energy with its description.
elastic potential energy
energy of an object because of its
potential and kinetic energy
mechanical energy
energy of an object because of its
height above a surface
gravitational potential energy
energy stored in a compressed or
stretched object

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.