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Flashcards

P4

Sparkle Shine English 44 cards

Cards in this deck (44)

  1. 1P4- EXPLAINING MOTIONOCR
  2. 2Describing motionPart 1
  3. 3How can the average speed of an object be calculated?If the distance travelled and time taken are known, then you divide the distance travelled by the time taken
  4. 4What is the instantaneous speed of an object?The speed of an object at a particular instant or the average speed over a very short period of time
  5. 5One a distance time graph, on which axis is the distance labeled?The Y axis is for the distance and the x axis is for the time taken.
  6. 6Finish this sentence" The..........the slope the greater the.......... , on a distance-time graph"-Steeper
    -Speed
  7. 7What does a negative velocity mean?That an object is travelling in the opposite direction
  8. 8What is an acceleration?A change in velocity
  9. 9How do you calculate acceleration? What is it measured in?Change in Speed/ Time taken
    It is measured in m/s/s or just meters per second squared
  10. 10Time taken is always on what axis?The x axis
  11. 11Complete this sentence "The.....the line, the.........the velocity is changing."-steeper
    -more rapidly
  12. 12What does s horizontal line on a distance -time graph represent?That the object is stationary.
  13. 13What are forces?Forces occur when there is an interaction between two objects
    When one object exerts on another it always experiences a force in return
  14. 14What is an interaction pair?....
  15. 15What is momentum?The measure of how difficult it is to stop a moving object
  16. 16What is the resultant force?The overall result of all forces acting on a object
  17. 17What is newton's first law of motion?If the forces on an object is balanced then the object will continue to do what it is already doing
  18. 18What acceleration measured in?Metres per second
  19. 19What are action reaction pairs?-Two objects that exert balanced forces in opposite directions
  20. 20What can you say about momentum?The bigger and faster the object the greater momentum it will have
  21. 21What is a force?Force is a push or pull an object experiences when interacts with another object.
  22. 22How is energy transferred?Energy is transferred when two objects interact with force
  23. 23What is work?The amount of energy transferred when an object moves in the direction of the force
  24. 24What does the amount of work depend on?-The size/amount of force
    -The distance the object moves in the direction of the force
  25. 25What is the link between kinetic energy and the moving objects mass?Kinetic energy is directly proportional to the mass of the moving object.
  26. 26What is weight?The forces of gravity acting upon a person or object.
  27. 27What are the pairs of forces that act upon a car?-Driving and counter force
    -Weight and reaction force
  28. 28What is displacement?The distance between the starting point and the finishing point.
  29. 29What is friction?A force that is exerted in the opposite direction of where work is applied which tends to prevent relative movement
  30. 30What is the reaction of the surface?When an object is resting on a surface, the object is pushing down on the surface but the surface is exerting an equal amount of force in the opposite direction
  31. 31What do these two forces have in common?They are both just responses to fores applied and they both exert balanced forces up to a limit
  32. 32What is a driving force...
  33. 33Finish this equation Momentum=....Mass x velocity
  34. 34The size of the change in what is what to what and what?-Change in momentum
    -proportional
    -The size of the resultant force
    and
    -an counter force
  35. 35Name two counter forces?-Friction
    -Air resistance
  36. 36In terms of driving force what happens when: -greater than the counter force -Equal to the counter force -Less than the counter force-The vehicle will speed up
    -The vehicle will travel at a constant speed
    -The vehicle will slow down
  37. 37Talk about time and changes in momentumThe longer the duration of the impact, the smaller the average force for a given change in momentum
  38. 38What do safety measures in cars do andSafety measures increase the amount of time taken for the person to decelerate. The longer the deceleration, the longer the change in momentum can occur leading to smaller forces acting on a person
  39. 39Give examples of some road safety measures.Seatbelts
    Air bags
    Helmets
  40. 40What is energy of a moving object called?Kinetic enery
  41. 41What can you say about amount of energy transferred and work done?They are equal
  42. 42The greater the ......of an object and the faster it is moving, the........its........mass
    greater
    kinetic energy
  43. 43How do you calculate GPE?Mass x Weight (N) x Height (M)
  44. 44—

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Flashcards on P4, created by Sparkle Shine on 08/09/2015.
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Sparkle Shine
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