Physics crossword puzzle

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Across
  1. 3. produced by reactions involving atomic or molecular changes
  2. 4. a speed in any direction
  3. 6. force forces that produce a nonzero net force
  4. 9. the smallest quantity of some physical property
  5. 11. created by the wind or a moving object and gravity
  6. 12. a substance that can be consumed to produce energy
  7. 19. the property of transmitting heat, electricity or sound
  8. 21. the distance an object travels per unit of time
  9. 22. an instance of one moving object or person striking violently against another
  10. 23. effect, frequency of a wave as a result of relative motion between the observer and the source
  11. 27. the derived SI unit of power
  12. 28. force the overall force an an object
  13. 29. The explanation base on an observation
  14. 31. the state in which one objects distance from another is changing.
  15. 32. In physics and mechanics, torque is the rotational equivalent of linear force
  16. 33. refers to size of a vector
  17. 34. momentum Linear momentum is defined as the product of a system’s mass multiplied by its velocity.
  18. 35. a measure of how springy an object is
  19. 38. a process in which a substance reacts with oxygen to give heat and light
  20. 39. electromotive force is created by a change of current in the same circuit
  21. 42. the derived SI unit of electric charge
  22. 43. first law an object in motion stays in motion
  23. 44. a force acting briefly on a body and producing a finite change of momentum.
  24. 46. the basic SI unit of electric current
  25. 47. the force that pulls objects towards each other
  26. 49. point, a place of object used for comparison to determine if something is in motion
Down
  1. 1. the center of an object
  2. 2. the force between two rubbing surfaces
  3. 5. constituting the core or central part
  4. 7. force equal force acting on a object in different directions.
  5. 8. the capacity of a physical system to do work
  6. 10. 3rd law, For every action, there is an equal and opposite reaction.
  7. 13. The force of gravity action on an object causing mass.
  8. 14. the instrument used to measure acceleration
  9. 15. the rate in which the the velocity changes
  10. 16. energy the mechanical energy that a body has by virtue of its motion
  11. 17. Total path traveled.
  12. 18. tangential stress on a liquid undergoing streamline flow divided by its velocity gradient
  13. 20. the person who leads a musical group
  14. 24. energy the mechanical energy that a body has by virtue of its position
  15. 25. velocity the maximum speed possible while free falling
  16. 26. fall when the only force acting on an object is gravity
  17. 30. second law, The acceleration of an object depends on the mass and the force applied
  18. 31. the product of a body's mass and its velocity
  19. 36. when the axis of a rotating object moves in a circle
  20. 37. Force a force that causes an object to move in a cycle
  21. 40. a visible mass of water or ice particles suspended at a considerable altitude
  22. 41. push or pull on an object
  23. 45. flash of light from an electric discharge in the atmosphere
  24. 48. 0 velocity; not moving