What is the instantaneous acceleration of the object at time = 9.5 seconds? −20 m/s2 0 m/s2 20 m/s2 −10 m/s2

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