Force, pressure, and buoyancy

Force, Pressure, and Buoyancy

Review 7

Force, Pressure, and Buoyancy 1What is the net force acting on the object?

A. 5 N to the rightB. 5 N to the left C. 20 N to the left D. 35 N to the right

A. 50 N downward B. 2000 N downward C. 50 N upward D. 2050 N upward

Force, Pressure, and Buoyancy 3A 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?A. Z is friction and X is the force from the wind B. W is friction and Y is gravityC. Z is the force from the wind and W is friction

D. Y is gravity and Z is the force from the wind

Force, Pressure, and Buoyancy 3A 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?A. Z is friction and X is the force from the wind B. W is friction and Y is gravityC. Z is the force from the wind and W is friction

D. Y is gravity and Z is the force from the wind

Force, Pressure, and Buoyancy 4In which situation are the forces acting on

the object unbalanced?A. A tricycle moves in a straight line at a

constant speed of 3m/sB. A car turns a corner at a constant speed of 25

m/sC. A hot air balloon descends at a constant

speed of 2m/sD. A man stands on a moving sidewalk moving at

a constant speed of 1.5 m/s

Force, Pressure, and Buoyancy 4In which situation are the forces acting on

the object unbalanced?A. A tricycle moves in a straight line at a

constant speed of 3m/sB. A car turns a corner at a constant speed of 25

m/sC. A hot air balloon descends at a constant

speed of 2m/sD. A man stands on a moving sidewalk moving at

a constant speed of 1.5 m/s

Force, Pressure, and Buoyancy 5The 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. A. X, Z, W, Y B. Y, W, Z, XC. W, Y, X, Z D. Z, X, Y, W

Object Mass

W 45 Kg

X 500 g

Y 3 Kg

Z 375 g

Force, Pressure, and Buoyancy 5The 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. A. X, Z, W, Y B. Y, W, Z, XC. W, Y, X, Z D. Z, X, Y, W

Object Mass

W 45 Kg

X 500 g

Y 3 Kg

Z 375 g

Force, Pressure, and Buoyancy 6Gravity is responsible for producing the

shapes of all of the following objects, exceptA. Planets B. Stars C. Solar systems D. Atoms

Force, Pressure, and Buoyancy 6Gravity is responsible for producing the

shapes of all of the following objects, exceptA. Planets B. Stars C. Solar systems D. Atoms

Force, Pressure, and Buoyancy 7 A piece of wood floats on the surface of a

lake because the water exerts A. An upward force equal to the weight of the

wood B. A downward force equal to the weight of the

wood C. An upward force equal to the weight of the

displacement water D. 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 A. An upward force equal to the weight of the

wood B. A downward force equal to the weight of the

wood C. An upward force equal to the weight of the

displacement water D. 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 A. Flatten due to the forces B. Fall at a constant speed C. Continue to speed up D. 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 A. Flatten due to the forces B. Fall at a constant speed C. Continue to speed up D. 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 A. 12 NB. 13 N C. 14 N D. 15 N

Distance pulled

Spring Scale Reading

1.0 cm 4 N

1.5 cm 6 N

2.0 cm 8 N

2.5 cm 10 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 A. 12 NB. 13 N C. 14 N D. 15 N

Distance pulled

Spring Scale Reading

1.0 cm 4 N

1.5 cm 6 N

2.0 cm 8 N

2.5 cm 10 N

Force, Pressure, and Buoyancy 10 A force is acting on each of the objects

below. What can be concluded about these forces? A. They are the same because they point towards an

object B. They are the same because they have the same

magnitudeC. They are different because they have different

magnitudesD. 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? A. They are the same because they point towards an

object B. They are the same because they have the same

magnitudeC. They are different because they have different

magnitudesD. They are different because they have different

directions

Force, Pressure, and Buoyancy 11 Which direction will the object move and

with how much force? A. 10 N to the left B. 10 N to the right C. 7 N to the left D. 7 N to the right

Force, Pressure, and Buoyancy 11 Which direction will the object move and

with how much force? A. 10 N to the left B. 10 N to the right C. 7 N to the left D. 7 N to the right

Force, Pressure, and Buoyancy 12 This box will increase in speed

A. Upward and to the left B. Downward and to the left C. Upward and to the right D. Downward and to the right

Force, Pressure, and Buoyancy 12 This box will increase in speed

A. Upward and to the left B. Downward and to the left C. Upward and to the right D. Downward and to the right

Force, pressure, and buoyancy

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