Physics Crossword

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Across
  1. 3. unit for force
  2. 4. the sum of forces
  3. 5. speeding up,slowing down,changing direction
  4. 8. object accelerates when --- force is applied
Down
  1. 1. speed with direction
  2. 2. net force is 0
  3. 6. distance/time=?
  4. 7. force/acceleration