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Chapter 12-Force
Test Description: Review
Instructions: Answer all questions to get your test result.
1) Newton's first law of motion states that an object remains at rest unless a ___________ force acts on it.
A
balanced
B
frictional
C
gravitational
D
net
2) If you squeeze the bottom of a closed tube of toothpaste, the pressure is increased _______________.
A
on the bottom of the tube
B
everywhere in the tube
C
on the top of the tube
D
on the sides of the tube
3) When a diver jumps off a diving board, gravity pulls him or her down to the water. What is the reaction force to Earth's gravity?
A
Air resistance slows the diver.
B
The diver's legs push against the board.
C
Friction between the diver and water slows the diver.
D
The diver pulls Earth up.
4) A Feather falls through the air more slowly than a brick because of
A
momentum
B
inertia
C
gravity
D
air resistance
5) If gravity did not affect the path of a horizontally thrown ball, the ball would ____________.
A
follow a curved path
B
go straight up
C
fall straight down
D
travel horizontally
6) The upward force on an object falling through the air is ______________.
A
terminal velocity
B
inertia
C
air resistance
D
gravity
7) The relationship among force, mass, and acceleration is stated in ________________.
A
Newton's first law of motion
B
Newton's third law of motion
C
Newton's second law of motion
D
the law of the conservation of momentum
8) A feather falls through the air more slowly than a brick because of ________________.
A
gravity
B
momentum
C
air resistance
D
inertia
9) Density is given in ________.
A
g/cm3
B
g/s2
C
Pa/cm3
D
N/m2
10) In a hydraulic system, the force exerted on the large piston is ____________________ the force exerted on the small piston.
A
greater than
B
not related to
C
less than
D
the same as
11) Forces that are equal in size but opposite in direction are ________________.
A
frictional forces
B
balanced forces
C
inertial forces
D
net forces
12) According to Archimedes, the buoyant force on an object is equal to ________________.
A
the weight of the fluid displaced
B
the weight of the object
C
the density of the fluid
D
the fluid pressure on the object
13) Momentum is the measure of ______________.
A
the amount of force acting in an object
B
how hard it is to stop an object
C
the tendency of an object to change its motion
D
the amount of matter in an object
14) I f you exert a force on an object in motion, you will change its __________________.
A
inertia
B
momentum
C
weight
D
mass
15) When a toy truck collides into a toy car, the momentum of ____________ is the same before and after the collision.
A
the car
B
the truck plus the car
C
the truck
D
the truck times the car
16) If you are standing on both feet and then stand on one foot, you have ______________________________ the pressure on the ground.
A
decreased
B
depends on your motion
C
increased
D
not changed
17) If you blow between tow table tennis balls suspended about 2 cm apart, the balls will __________________.
A
move toward each other
B
move back and forth
C
move away from each other
D
not move
18) If you are standing on one foot and then put both feet down, you have ________ the force on the ground.
A
increased
B
not changed
C
decreased
D
can't tell
19) The statement for every action there is an equal but opposite reaction is a statement of ______________.
A
the law of of the conservation of momentum
B
Newton's second law
C
Newton's third law
D
Newton's first law
*select an answer for all questions
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