Physics

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Author:
kkbrum
ID:
129273
Filename:
Physics
Updated:
2012-01-20 20:11:42
Tags:
physics
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Description:
Physics 1 Mid-year Review
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  1. ___________ is the rate at which distance is traveled
    speed
  2. ______ is speed with direction
    velocity
  3. _________speed is speed at any moment
    instantaneous
  4. _________ speed is the totale distance divided by total time for a trip
    average
  5. ___________ is the rate at which velocity changes
    acceleration
  6. a __________ has both magnitude and direction
    vector
  7. if you walk away from a motion detector, the distance-time graph slopes _______
    up
  8. if you walk towards a motion detector, the distance-time graph slopes ________
    down
  9. if you stand still, the distance-time graph is ________
    flat
  10. if you walk towards the motion detector, the velocity is _________
    negative
  11. if you walk away from the motion detector, the velocity is _________
    positive
  12. if you stand still, the velocity is _______________
    zero
  13. if you walk more quickly, the slope of the graph is _________
    steeper
  14. the word __________ means size or amount
    magnitude
  15. if you are standing on a moving bus, you are at rest _______ to the bus, but moving ______ to the ground outside
    relative
  16. ___________ is measured in the unit m/s2
    acceleration
  17. a ____________ has magnitude but no direction
    scalar
  18. ____________ is the stretching force in a string
    tension
  19. the sum of two vectors is called the _________
    resultant
  20. an object moving in the air only affected by gravity is called a _____________
    projectile
  21. a vector can be resolved into two _______________, horizontal and vertical
    components
  22. ______________ is the force between objects as they slide across each other
    friction
  23. __________ is an object's resistance to a change in its motion
    inertia
  24. an object's ________ changes as the object moves from the Earth to the moon
    weight
  25. an object's ______ doesnt change as it moves from the Earth to the moon
    mass
  26. __________ is the unit for force
    Newton
  27. __________ is the quantity of matter in an object, it is measured in kilograms
    mass
  28. _____ is the force of gravity on an object
    weight
  29. the combination of all forces acting on an object is called the _______________
    net force
  30. A book sits on the table. The table pushes up on it. The name of this force is the __________ force
    normal
  31. __________________ is when the net force on an object is zero
    equilibrium
  32. if i push a box to the right, the direction of friction on it is to the ____________
    left
  33. ___________ is the unit for pressure
    pascal
  34. Newton's third law says that when two objects collide, the forces on them are always ___________
    equal
  35. A skydiver moves at a constant speed called the ___________ speed when her weight equals the force of air resistance on her
    terminal
  36. as a skydiver's speed increases, the force of air resistance on her _________________
    increases
  37. ______________ is the amount of force per area
    pressure
  38. What does Newton's third law say?
    For every action, there is an equal and opposite reaction
  39. What does Newton's first law say?
    AN object at rest will stay at rest and an object in motion will stay in motion at a constant velocity unless acted on by an outside net force
  40. __________ causes a change in momentum
    impulse
  41. an objects ____________ depends on its mass and velocity
    momentum
  42. The law of ____________________________ says that the total momentum of two objects before a collision is the same as the total momentum after the collision
    conservation of momentum
  43. an ____________ collision occurs when two objects bounce
    elastic
  44. an _________________ collision occurs when two objects stick together
    inelastic
  45. an ________________ is when two objects start together and end separate
    explosion
  46. ________ is done when an object is moved by a force
    work
  47. ______________ is the unit at which work and energy are measured
    joules
  48. ________ is the rate at which work is done
    power
  49. one ________ equals one joule per second
    watt
  50. ______________ energy is stored energy
    potential
  51. if you lift an object, you give it ___________________ potential energy
    gravitational
  52. if an object is moving, it has ______ energy
    kinetic
  53. the law of ________________________________ states that energy can neither be created or destroyed
    conservation of energy
  54. If you hold an object above the ground, it has ___________________ energy. As it falls, it gains ___________ energy and loses _______ energy. The total amount of energy at any point in its fall is ____________.
    gravitational potential, kinetic, gravitational potential, constant
  55. A force that acts perpendicular to the motion of an object is called the _____________ force and it makes the object ______________________________________.
    centripetal, turn in a circular path
  56. The gravitational force between two objects depends on their ________________ and the ________ between their centers
    masses, distance

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