Afamiliar toy consists of an aligned row of identical steel balls that are suspended by monofilament so they just touch. when the balls collide the collisions are very close to perfectly elastic. when two balls are lifted from one end together and released, two balls pop out from the other end. if instead one ball popped out with twice the speed of the initial set of two balls, what law of physics would be violated?

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.