Question 20 Consider a situation Where a skater pulls her arms inward, causing her rotation rate to speed up. Kinetic energy is conserved. 0 True 0 False Question 21 If the velocity of an aircraft is doubled, the kinetic energy of the aircraft is also doubled. 0 True 0 False Question 22 Consider a situation where you carry a ZO-N box up a ight of stairs, raising its elevation by 5 m. You drop the box. As it falls to its original level, its kinetic energy is 100 J. 0 True 0 False