What is the force required to lift an object equal to? a. The weight in N
b. The weight in kg
c. The mass in kg
d. The mass in N

What is the main difference between the formulas for kinetic energy (ke) and gravitational potential energy (pe)? a. ke depends on position and pe depends on motion. b. ke depends on motion and pe depends on position. c. both energies depend on motion, but only ke depends on position. d. both energies depend on position, but only pe depends on motion.