Simple Maths & Physics

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Across
  1. 2. it is between a right angle and a straight angle
  2. 4. an equation representing a scientific phenomenon
  3. 6. they consist of a numerator, a fraction bar and a denominator
  4. 8. the rate of change of velocity of an object with respect to time
  5. 9. used to indicate that a root is being taken
  6. 12. a change in position of an object over time
  7. 13. the relation of to volume. The unit is measured in kg/dm³
Down
  1. 1. the act of working out a solution to a mathematical problem
  2. 3. the resistance, of any physical object, to any change in its velocity
  3. 5. a principle that states that energy is not lost within an isolated physical system
  4. 7. the distance around a circle
  5. 10. here: a scientific description or statement of the facts inferred through the observation of a phenomenon
  6. 11. the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface