Physics puzzle

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Across
  1. 2. You toss a coin in the train and the coin falls behind you. This means the train has _______.
  2. 5. It is possible for something to change acceleration but not change its speed if it moves in a ........ path
  3. 6. The measure of the inertia of a body
  4. 7. Kg meter per second square
  5. 9. SI Unit of Mass
  6. 10. A trolley moving with a constant speed is experiencing ..... force.
  7. 12. Object A changes direction at least once. The ratio of displacement to the distance of Object A is _________ than 1.
  8. 15. Kind of force which leads to the motion of the object
  9. 18. The speedometer of a car measures its…… speed.
  10. 20. When there is no change in ............., the magnitude of displacement= distance
Down
  1. 1. Speed is a .......... quantity
  2. 3. A free-falling body experiences motion with uniform ............
  3. 4. Force is the rate of change of what?
  4. 8. Force and mass are....... proportional
  5. 11. the area below the velocity-time graph is a measure of what?
  6. 13. Rest and motion are ...... terms
  7. 14. Force is a ............ quantity
  8. 16. Displacement cannot be ...........
  9. 17. If acceleration is negative then retardation is ..............
  10. 19. an object will continue accelerating till the resultant force is .....