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Laws Of Motion
Test Description: INTEGRATED science 9th
Instructions: Answer all questions to get your test result.
1) The upward force of an objectfalling through the air is
A
inertia
B
terminal velocity
C
momentum
D
air resistance
2) The relationship among mass, force, and acceleration is explained by
A
Newton's third law of motion
B
Newton's second law of motion
C
conservation of momentum
D
Newton's first law of motion
3) A feather will fall through the air more slowly than a brick because of
A
air resistance
B
inertia
C
gravity
D
momentum
4) The path of a projectile is
A
always horizontal
B
always vertical
C
curved
D
straight
5) The siz of the gravitational forces between two objects depends on their
A
speed and direction
B
masses and distance between them
C
inertia
D
frictional forces
6) An object that is in free fall seems to be
A
speeded up by air resistance
B
not moving
C
weightless
D
slowed by air resistance
7) The unit of momentum is
A
m/s 2
B
kg x m
C
kg x m/s 2
D
kg x m/s
8) If gravity did NOT affect the path of a horizontally thrown ball, the ball would ____.
A
travel horizontally
B
follow a curved path
C
go straight up
D
fall straight down
9) The statement "to every action there is an equal and opposite reaction" is ____.
A
Newton's third law of motion
B
Newton's first law of motion
C
The law of conservation of momentum
D
Newton's second law of motion
10) When a force is exerted on a box, an equal and opposite force is exerted by the box. These forces are called ____ forces.
A
centripetal
B
fricitonal
C
gravitational
D
action-reaction
*select an answer for all questions
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