While mountain biking you find you can accelerate from 0 m/s to 8 m/s in 3 seconds. what is your acceleration? is this acceleration higher than that of the bear you are riding away from which accelerates from 0 to 30 m/s in 8 seconds?

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.