physics

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Across
  1. 1. The distance traveled by a body in one unit of time is called
  2. 4. The rate of change of velocity of a moving object is called
  3. 6. zero The theoretical lowest temperature possible, which occurs when all random motion of molecules has ceased
  4. 9. The total amount of energy radiated into space each second from the surface of a star
Down
  1. 2. force One of four fundamental forces; the force of attraction or repulsion between two charged particles
  2. 3. effect An apparent shift in the frequency of sound or light due to relative motion between the source of the sound or light and the observer
  3. 5. The transfer of heat from a region of higher temperature to a region of lower temperature by increased kinetic energy moving from molecule to molecule
  4. 7. The capacity of a body to do work is called
  5. 8. hole The theoretical remaining core of a supernova that is so dense that even light cannot escape