The motor of a 1.8 kg battery-powered toy car creates a constant force of 0.17 N in the direction of motion. If the car starts from rest, then what is its speed after 1.1 m of forward motion? (You may assume no friction.) Group of answer choices

0.75 m/s

0.32 m/s

0.46 m/s

0.21 m/s

4.8 m/s

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.