Physics

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Across
  1. 3. obtained by dividing displacement of a moving body with time
  2. 4. the product of velocity and time
  3. 5. Measured amount of substance in terms of numbers
  4. 7. name of famous scientist who performed experiments at leaning tower of ‘pisa’
Down
  1. 1. most suitable device used to measure internal diameter of test tube
  2. 2. one of a unit which is not a derived unit
  3. 4. one of a vector quantity
  4. 6. a change in position of a body