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Forces
Test Description: Chapter Test review
Instructions: Answer all questions to get your test result.
1) The unit of force, a Newton, is equal to
A
the amount of mass in an object
B
kg x m/s2
C
mass x acceleration
D
kg x m/s
2) A(n) _____________________________ causes objects to move in a circle
A
centripetal force
B
large weight
C
acceleration
D
terminal velocity
3) Newton's second law of motion states the relationship of mass, acceleration, and force. It says that
A
Every object attracts every other object in the universe
B
Acceleration equals force divided by mass
C
Force equals acceleration divided by mass
D
Force equals mass divided by acceleration
4) The amount of matter in an object is called its
A
force
B
weight
C
mass
D
inertia
5) A(n) _________________ can cause an object's motion to change
A
inertia
B
balanced force
C
weight
D
unbalanced force
6) The momentum of a 1400 kg car traveling at a velocity 10 m/s is
A
14,000 N
B
140 N
C
14,000 kg*m/s
D
14 m/s2
7) Friction acts in a direction ________________ to the direction of an object's motion
A
equal
B
unrelated
C
perpendicular
D
opposite
8) Unless an object at rest is acted upon by a force, it stays at rest due to its
A
friction
B
inertia
C
gravity
D
matter
9) A 50-kg ball is accelerating 100 m/s2 by a force of
A
5000 N
B
0.50 N
C
50 N
D
500 N
10) An object in free fall ___________________ until it reaches terminal velocity.
A
accelerates
B
decreases in mass
C
slows down
D
is unbalanced
11) A Newton is a unit of ______________________
A
gravity
B
velocity
C
fluid
D
force
12) Weight is the measure of the force of _____________ on an object.
A
velocity
B
force
C
gravity
D
friction
13) Air rushing against an airplane is an example of _____________ friction
A
fluid
B
sliding
C
static
D
rolling
14) The momentum of an object depends on its mass and __________________
A
momentum
B
speed
C
velocity
D
acceleration
15) The total momentum of any group of objects remains the same unless an outside ______________ acts on the objects.
A
gravity
B
acceleration
C
force
D
friction
16) Forces can be added together only if they are acting on THE SAME OBJECTS
A
false
B
true
17) According to Newton's second law of motion, VELOCITY increases as force increases, if mass stays the same.
A
true
B
false
18) The force due to gravity is stronger if two objects are FURTHER AWAY.
A
true
B
false
*select an answer for all questions
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