A 450 g object is located 100 cm above a zero leveled plane when a force push it straight upward at 10 m/s. By using the principle of work and energy, determine: a) how high above this plane the object goes, b) the magnitude of the object's velocity when it falls back to a height of 100 cm above the plane, c) the magnitude of the object's velocity immediately before it hits the plane. Draw the free body diagram.