Motion and time

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Across
  1. 4. distance moved in unit time
  2. 5. a weight hung from a string
  3. 7. instrument in a vehicle that gives the speed of the moving vehicle in km per hour
  4. 9. instrument in the vehicle that gives the distance travelled on kilometer
  5. 10. the time taken by a pendulum for one to and fro movement
Down
  1. 1. units that are uniformly used by everyone
  2. 2. quantities that can be measured
  3. 3. movement back and forth in a regular rhythm.
  4. 6. comparison of an unknown quantity with some quantity of the same kind
  5. 8. a substance whose crystals can move very fast at a vey precise tome