A roller coaster car picks up speed as it rolls down the slope. As it starts down the slope, its speed is 4 m/s. It accelerates at a rate of 6 m/s/s. What is its
velocity after 3 seconds? *

Two horses begin at rest. after a few seconds, horse a is traveling with a velocity of 10 m/s west, while horse b is traveling with a velocity of 13 m/s west. which horse had a greater acceleration? a. horse a because its change in velocity was greater than horse b's in the same time. b. horse b because its change in velocity was greater than horse a's in the same time. c. horse b because its change in velocity was the same as horse a's, but it took less time. d. both horses had the same acceleration.