37. At her most recent track race, Stella had an acceleration of 2.1 m/s2 during the first 3 s of the race. What was her
velocity after 2 s?

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material