This woman is riding a bicycle down a hill at a constant speed and in a straight line. Which change will increase the speed of the bicycle? A. An added force of 20 N to the side of the hill B. Added forces of 30 N up the hill and 20 N down the hill
C. Added forces of 30 N up the hill and 30 N down the hill
D. An added force of 20 N down the hill