Mrs. Wilson is driving her car to the store. She drives on a street where the speed limit is 50 mph. Then she turns onto a street where the speed limit is 45 mph. What happens to the kinetic energy of her car?
a. When she slows from 45 mph to 50 mph, the car’s kinetic energy decreases.
b. When she slows from 50 mph to 45 mph, the car’s kinetic energy increases.
c. When she speeds up from 45 mph to 50 mph, the car’s kinetic energy is changed to potential energy.
d. When she slows from 50 mph to 45 mph, the car’s kinetic energy stays the same.