Question 6 (1 point)
 A biker is going 9m/s when they see a cat in the road. The biker presses her brakes
 and slows down with an acceleration of -5m/s2 over a time of 2.1s. Calculate how
 far the biker traveled during this time.
 a) 18.9
 b) 13.7
 c) 7.9
 d) -3.2