What is velocity? O A. How fast something moves in a specific direction
B. The distance something moves in a certain time
O C. How much force is applied to something
O D. How much speed changes in a certain time

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.