Warm-Up Crossword!

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Across
  1. 2. for electric charges, opposites ________
  2. 5. the slope on a velocity-time graph
  3. 7. standard unit of measurement for mass
  4. 8. rise over run
  5. 9. how fast an object is moving (scalar)
Down
  1. 1. the force that keeps you on the ground
  2. 3. number of cycles a wave completes in one second
  3. 4. can be thermal, kinetic, or potential
  4. 5. the height of a wave from equilibrium to peak
  5. 6. subatomic particle with a negative charge