Force, pressure, and buoyancy
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Force, pressure, and buoyancy

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    Force, pressure, and buoyancy Force, pressure, and buoyancy Presentation Transcript

    • Force, Pressure, and Buoyancy
      Review 7
    • Force, Pressure, and Buoyancy 1
      What is the net force acting on the object?
      5 N to the right
      5 N to the left
      20 N to the left
      35 N to the right
    • Force, Pressure, and Buoyancy 1
      What is the net force acting on the object?
      5 N to the right
      5 N to the left
      20 N to the left
      35 N to the right
    • Force, Pressure, and Buoyancy 2
      What is the net force acting on the object?
      50 N downward
      2000 N downward
      50 N upward
      2050 N upward
    • Force, Pressure, and Buoyancy 2
      What is the net force acting on the object?
      50 N downward
      2000 N downward
      50 N upward
      2050 N upward
    • Force, Pressure, and Buoyancy 3
      A plant sits on a table that is outside. A strong wind blows from the right, but the plant does not move. Which of the following correctly identifies two of the four forces acting on the plant?
      Z is friction and X is the force from the wind
      W is friction and Y is gravity
      Z is the force from the wind and W is friction
      Y is gravity and Z is the force from the wind
    • Force, Pressure, and Buoyancy 3
      A plant sits on a table that is outside. A strong wind blows from the right, but the plant does not move. Which of the following correctly identifies two of the four forces acting on the plant?
      Z is friction and X is the force from the wind
      W is friction and Y is gravity
      Z is the force from the wind and W is friction
      Y is gravity and Z is the force from the wind
    • Force, Pressure, and Buoyancy 4
      In which situation are the forces acting on the object unbalanced?
      A tricycle moves in a straight line at a constant speed of 3m/s
      A car turns a corner at a constant speed of 25 m/s
      A hot air balloon descends at a constant speed of 2m/s
      A man stands on a moving sidewalk moving at a constant speed of 1.5 m/s
    • Force, Pressure, and Buoyancy 4
      In which situation are the forces acting on the object unbalanced?
      A tricycle moves in a straight line at a constant speed of 3m/s
      A car turns a corner at a constant speed of 25 m/s
      A hot air balloon descends at a constant speed of 2m/s
      A man stands on a moving sidewalk moving at a constant speed of 1.5 m/s
    • Force, Pressure, and Buoyancy 5
      The table lists the masses of four objects at rest. Put the objects in order from the object needing the least force to the object needing the most force to be moved.
      X, Z, W, Y
      Y, W, Z, X
      W, Y, X, Z
      Z, X, Y, W
    • Force, Pressure, and Buoyancy 5
      The table lists the masses of four objects at rest. Put the objects in order from the object needing the least force to the object needing the most force to be moved.
      X, Z, W, Y
      Y, W, Z, X
      W, Y, X, Z
      Z, X, Y, W
    • Force, Pressure, and Buoyancy 6
      Gravity is responsible for producing the shapes of all of the following objects, except
      Planets
      Stars
      Solar systems
      Atoms
    • Force, Pressure, and Buoyancy 6
      Gravity is responsible for producing the shapes of all of the following objects, except
      Planets
      Stars
      Solar systems
      Atoms
    • Force, Pressure, and Buoyancy 7
      A piece of wood floats on the surface of a lake because the water exerts
      An upward force equal to the weight of the wood
      A downward force equal to the weight of the wood
      An upward force equal to the weight of the displacement water
      A downward force equal to the weight of the displacement water
    • Force, Pressure, and Buoyancy 7
      A piece of wood floats on the surface of a lake because the water exerts
      An upward force equal to the weight of the wood
      A downward force equal to the weight of the wood
      An upward force equal to the weight of the displacement water
      A downward force equal to the weight of the displacement water
    • Force, Pressure, and Buoyancy 8
      A ball is dropped from the top of a tall building. As the ball falls, the upward force of air resistance becomes equal to the downward pull of gravity. When these two forces are equal in magnitude, the ball will
      Flatten due to the forces
      Fall at a constant speed
      Continue to speed up
      Slow to a stop
    • Force, Pressure, and Buoyancy 8
      A ball is dropped from the top of a tall building. As the ball falls, the upward force of air resistance becomes equal to the downward pull of gravity. When these two forces are equal in magnitude, the ball will
      Flatten due to the forces
      Fall at a constant speed
      Continue to speed up
      Slow to a stop
    • Force, Pressure, and Buoyancy 9
      A spring scale is pulled downward and readings are recorded. If the spring is pulled to 3.5 cm, the spring scale should read
      12 N
      13 N
      14 N
      15 N
    • Force, Pressure, and Buoyancy 9
      A spring scale is pulled downward and readings are recorded. If the spring is pulled to 3.5 cm, the spring scale should read
      12 N
      13 N
      14 N
      15 N
    • Force, Pressure, and Buoyancy 10
      A force is acting on each of the objects below. What can be concluded about these forces?
      They are the same because they point towards an object
      They are the same because they have the same magnitude
      They are different because they have different magnitudes
      They are different because they have different directions
    • Force, Pressure, and Buoyancy 10
      A force is acting on each of the objects below. What can be concluded about these forces?
      They are the same because they point towards an object
      They are the same because they have the same magnitude
      They are different because they have different magnitudes
      They are different because they have different directions
    • Force, Pressure, and Buoyancy 11
      Which direction will the object move and with how much force?
      10 N to the left
      10 N to the right
      7 N to the left
      7 N to the right
    • Force, Pressure, and Buoyancy 11
      Which direction will the object move and with how much force?
      10 N to the left
      10 N to the right
      7 N to the left
      7 N to the right
    • Force, Pressure, and Buoyancy 12
      This box will increase in speed
      Upward and to the left
      Downward and to the left
      Upward and to the right
      Downward and to the right
    • Force, Pressure, and Buoyancy 12
      This box will increase in speed
      Upward and to the left
      Downward and to the left
      Upward and to the right
      Downward and to the right