Physics Crossword

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Across
  1. 4. The force that pulls objects towards the Earth
  2. 5. The amount of matter in an object
  3. 8. To slow down or stop
  4. 9. A unit of force
Down
  1. 1. The energy of motion
  2. 2. A push or pull
  3. 3. The study of matter and energy and their interactions
  4. 5. The change in position of an object
  5. 6. How fast something moves
  6. 7. When two objects exert forces on each other