Classify each of the following as True or False. The strong force is responsible for holding the atomic nucleus together. Pure uranium-238 can be used to make a fission bomb. Stable isotopes have long half-lives. A proton is composed of two up-quarks and one down-quark. During beta decay, a proton transforms into a neutron and an electron. Most nuclear power plants use nuclear fusion as their energy source.

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.