Todd and susan are riding on a merry-go-round. todd rides on a horse toward the outside of the circular platform, and susan rides on a horse toward the center of the circular platform. when the merry-go-round is rotating at a constant angular speed, todd’s angular speed is:
a. exactly half as much as susan’s.
b. larger than susan’s. smaller than susan’s.
c. the same as susan’s.
d. exactly twice as much as susan’s.

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.