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95 Matching questions

  1. Momentum
  2. Scalar
  3. Which will have a bigger coefficient of friction, rubber on a dry concreate or rubber on wet concreate?
  4. What is the unit of energy?
  5. What is the difference between apparent weigh and actual weight? What does a scale tell you?
  6. What is kinetic energy?
  7. Speed
  8. Kinetic Energy
  9. What is your weight in the middle of the earth?
  10. As an elevator moves with a constant velocity down towards the bottom floor, what happens to your actual weight?
    What about your apparent weigh?
  11. Why is acceleration due to gravity always negative?
  12. What is the difference between static and kinetic friction?
  13. Which type of collision does not have conservation of mechanical energy? What happens to that energy then?
  14. If a rock in a sling-shot has 700 J of potential energy, what type of potential energy is it? How much kinetic energy will the sling-shot have after it is fired without air resistance? With air resistance?
  15. Impulse
  16. Hypothesis
  17. What do you bend your knees when you land?
  18. If a bullet is fired horizontally and another is dropped from the same height, which bullet will hit the ground first?
  19. What is a free body diagram and what is it used for?
  20. Name 3 action-reaction pairs?
  21. Is a fact objective of subjective? Is it usually quantitative or qualitative?
  22. The force influenced by gravity is called what?
  23. Velocity
  24. Inelastic Collision
  25. If a ball has momentum, it must also have what type of energy?
  26. Resultant
  27. Weigh
  28. What do forces produce?
  29. What type of collision takes place with the Newton's Cradle? What type of collision takes place with car crashes?
  30. Elastic Collision
  31. How are impulse and momentum related?
  32. What is friction?
  33. What is the normal force of an object in free fall.
  34. When the mass is increased, what happens to inertia?
  35. Why does your body want to keep going forward after an accident when the can has already stopped?
  36. What is the coefficient of friction? What are it's units? Is the coefficient of static and kinetic friction always bigger between two objects? Why?
  37. Compare elastic and inelastic collisions.
  38. Gibe 3 examples of projectiles?
  39. Why would you not require a seat belt to remain in your seat during a loop-de-loop on a roller coaster?
  40. As an elevator accelerates up to the top floor?, what happens to your actual weight? What about your apparent weigh?
  41. In the vertical direction, is a projectile moving at a constant velocity or acceleration? Why?
  42. Inertia
  43. What does weight really measure?
  44. Elastic Potential Energy
  45. Static Friction
  46. List Newton's three laws of motion in YOUR OWN WORDS and gives examples of each.
  47. Mechanical Energy
  48. If a car is traveling 30 mph needs 100 meters to stop, how much room does it need if it going at 60 mph? How about a 90 mph?
  49. Explain conservation of momentum in your own words.
  50. Is momentum a scalar or a vector quantity?
  51. Gravitational Potential Energy
  52. Mass
  53. Give an example of something with no net force acting on it but still moving?
  54. Theory
  55. What are 2 ways an object can have positive constant acceleration? What are 2 ways an object can have negative constant acceleration?
  56. If you fell through the center of earth what happens to your speed as you approach the Earth's center? What about as you move away?
  57. Will you weigh more or less in an elevator accelerating up?
  58. Fact
  59. If a truck and a car collide together, which has a bigger force? What has the bigger acceleration?
  60. Displacement
  61. What is the difference between elastic and gravitational potential energy?
  62. Compare the momentum of a large truck moving 30 mph to the momentum of the same truck moving at 90 mph.
  63. Know how to convert to SI units (metric conversions).
  64. Will you weigh more or less in an elevator moving at a constant speed up?
  65. Precise
  66. Kinetic Friction
  67. What are the SI units for displacement, mass, time, velocity, acceleration, force, energy, momentum, and impulse?
  68. What is the name of the force that results from a surface pushing back on an object?
  69. Net Force
  70. Projectile Motion
  71. Accurate
  72. Give an example of when something is accurate, but not precise?
  73. Can you have constant velocity and constant acceleration at the same time? Why or why not?
  74. In the horizontal direction, is a projectile moving at a constant velocity or acceleration? Why?
  75. Describe the energy transformations as a pendulum swings back and forth.
  76. Acceleration
  77. What is the difference between mass and weight? Which one changes with location? Which one remains the same no matter what?
  78. What are the 5 steps to the scientific method?
  79. What is a force?
  80. How can an object moving and still have inertia?
  81. When would the momentum of a system not be conserved?
  82. Force
  83. What forces are shown on a free body diagram?
  84. How does bouncing increase the impulse?
  85. If you are in space (frictionless) and you throw an object that is less massive than you, which will move away faster, you or the object? What if the object is more massive than you? What if the object is the same mass as you?
  86. What is the difference between distance and displacement? Which is a scalar and which is a vector?
  87. Vector
  88. When you increase the mass of an object but apply the same amount of force, what happens to the acceleration?
  89. Dimension
  90. What are 3 ways and object can change it's velocity.
  91. When an object moves in a circle, in which direction does the force point? What is the name of that force?
  92. What type of force is air resistance?
  93. Does a stretched out slinky on a table have gravitational or elastic potential energy?
  94. What is inertia? Is inertia a force?
  95. A 5 kg cart moves with a velocity of 4 m/s to the left. What is the momentum of the cart?
  1. a product of force and time interval during which the force acts.
    - Impulse does NOT change in a collision; impulse is the change in momentum
  2. b 60- 400
    90- 1600
  3. c - out, centripetal force
  4. d Fact- Objective
    - quantitative
  5. e - 0
  6. f a mesurable extent of some kind
  7. g -a car pushing on the earth, the earthing pushing back on it
    - two people pushing off each other on ice
    - a gun shooting out a bullet
  8. h - inelastic
    - it is lost to heat, energy
  9. i Distance- the total distance traveled
    Displacement- the shortest distance from point a to pint b?
  10. j When objects collide without being permanently deformed or without generating heat
    - Energy is NOT lost; there is no damage to either object
  11. k how replicable a measurement is; AKA How close to the same number each measurement is
  12. l 1. Question/ Recognize the Problem
    2. Hypothesis
    3. Predict consequences of hypothesis
    4. Conduct experiment and collect data
    5. Conclusion
  13. m - same force
    - car bigger acceleration
  14. n - mass is amount of matter, reamins the stame
    - weigh relative to gravity, pushing down, changes with location
  15. o - p=-20
  16. p - constant acceleration
  17. q - vector
  18. r G*MKHDDCM*ū*N
  19. s distance and direction of an object's change in position from the starting point
  20. t Nearness of a measurement to the accepted true value
  21. u - static, non moving, the object it still
    - kinetic, moving
  22. v - normal
  23. w the total energy
  24. x - to increase time, and decrease force
  25. y 1. inertia, an object that moves will keep moving, and object at rest will not move, unless another force acts on it
    - a ball rolling across a frozen pond, it dose not slow down
    2. F=ma, acceleration and mass are directly proportional to force
    3. for every action there is an equal opposite reaction
  26. z - the object
    - you
    - both the same
  27. aa energy in motion
  28. ab an increase in speed
  29. ac - the smae
  30. ad - Ug to K
  31. ae - 90 mph, 3 times grater
  32. af - both
  33. ag - it increases, directly proportional
  34. ah - a drawing with all forces, to show all fouces acting on it
  35. ai No, because acceleration is change in velocity
    - only when your velocity or acceleration ir both is zero
  36. aj - a man being shot out a a cannon
    - a gun shooting out into the are
    - throwing a ball in the air
  37. ak when you hit the target in different places
  38. al the curved path that an object follows when thrown, launched, or otherwise projected near the surface of Earth
  39. am the combination of all forces acting on an object
  40. an - weight
  41. ao - centripital force forces you out towered the tract into your seat
  42. ap - same time, because same vertical speed
  43. aq - less acceleration, less speed
    - acceleration decreases, less speed
  44. ar how heavy something is
  45. as the force that opposes the movement of two surfaces that are in contact and are sliding over each other
  46. at - mu
    - no units
    - static
  47. au Deals with both magnitude and direction
  48. av - J Joules
  49. aw friction that acts on objects that are not moving
    - resists motion
  50. ax - it is pushing down
  51. ay - constant velocity
  52. az the product of mass and velocity
    - inertia in motion
  53. ba - a push or a pull
  54. bb - a force that acts to resist motion of object, or material of contact
  55. bc - it gets bigger apparent, same actual
  56. bd The distance an object travels per unit of time
  57. be - it is a law, the tendency of an object to stay in it's constant state, unless another force acts on it
  58. bf energy of motion
  59. bg - more
  60. bh Potential energy that depends on the height of an object
  61. bi a vector that is the sum of two or more other vectors
    - the final point in the process
  62. bj - it does not
  63. bk - momentum stays the same though a system, same in the beginning and end, unless outside forces
  64. bl an explanation of why things happen that is tested, but is constantly undergoing change; a synthesis of a large body of information that encompasses well-tested and verified hypotheses; not set and can undergo change
  65. bm - speed up
    -slow down
    -chance direction
  66. bn - actual stays the same
    - apparent weigh gets smaller
  67. bo 1. speeding up
    2. slowing down in the negative direction
    1. slowing down
    2. speeding up in positive acceloration
  68. bp - because of inertia
  69. bq - friction
  70. br - elastic
    -700 J
    - less than 700 J
  71. bs displacement: meter: m
    Mass: Kilogram: Kg
    Time: Seconds: s
    velocity: meters per sec: m/s
    acceleration: meters per sec squared: m/s2
    Force: Newtons: N
    Energy: Joule: J
    Momentum: kg * m/s
    Impulse: N*s
  72. bt the tendency of an object to resist any change in its motion
    - a law
  73. bu speed in a given direction
  74. bv - all fouces, tention, norma, applied, friction, cintripial, weight
  75. bw elastic- no damage or hear, bounce
    inelastic - stick together, or warping, energy losy
  76. bx - dry
  77. by - impulse is change in momentum
  78. bz elastic- the potential to be snap back
    gravitational potential energy- has potential to fall
  79. ca an educated guess; specific, quantitative/ qualitative, includes time period
  80. cb - amount of gravity
  81. cc - the acceleration goes down
  82. cd - when energy is lost, due to outside forces acting on it, work is done
  83. ce - acceleration
  84. cf - 0 N
  85. cg - a ball rolling acros a frozen pond
  86. ch .- when moving it will stay moving
  87. ci When colliding objects become entangled or coupled together, thereby generating heat or disfigurement
    - Energy is lost during the collision (usually due to heat or friction); there is a change in shape
  88. cj energy stored by something that can stretch or compress
  89. ck - elastic
  90. cl - kinetic
  91. cm Describing with a single nimber
    gives magnitude only
    can be both positive and negative
  92. cn A push or pull exerted on an object
  93. co - apparent is based on normal weigh at the moment in time and place, scale tells you
    - actual weigh is just what you weigh no matter what
  94. cp the amount of matter in an object
  95. cq an objective observation that cannot be contradicted; a close agreement between competent observations who make a series of observations of the same phenomenon