Which of the following statements is/are true? a. increasing the surface area over which a force is distributed increases the amount of stress acting on the surface. b. decreasing the surface area over which a force is distributed increases the amount of stress acting on the surface. c. both a and b are true. d. neither a nor b is true.

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.