You have a quarter, mass m = 5.670 g, sliding across a table top at subway in the student union. your roommate's radar gun clocks its initial speed at vi = 4.7 m/s. the friction force on the quarter that slows it down has size 0.01 n. calculate the stopping distance to the nearest 0.01 m. e. g., if your answer is 8.837 m, then type 8.84 in the answer box.

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.