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Science 6 Chapter 6 Test Set A
Test Description: Force
Instructions: Answer all questions to get your test result.
1) What happens when two forces act in the same direction?
A
The stronger one prevails.
B
They cancel each other out.
C
Their strengths are added.
D
Their sum divided by two is the total force.
2) The greater the mass of an object
A
the more space it takes up
B
the easier the object starts moving
C
the more balanced it is
D
the greater its inertia
3) The force of gravity on a person or object on the surface of a planet is called
A
mass
B
free fall
C
terminal velocity
D
weight
4) The force that one surface exerts on another when the two rub against each other is called
A
inertia
B
friction
C
acceleration
D
gravity
5) The law of universal gravitation states that any two objects in the universe that have mass, without exception
A
combine to provide a balanced force
B
create friction
C
repel each other
D
attract each other
6) Forces can be added together only if they are
A
acting on the same object
B
substantial
C
balanced forces
D
unaffected by gravity
7) According to the law of conservation of momentum, when two objects collide in the absence of outside forces,
A
the objects have the same momentum before and after they collide
B
the objects have more momentum after they collide than they did before
C
velocity decreases
D
velocity increases
8) Any force that causes an object to move in a circle is a(n)
A
balanced force
B
gravitational force
C
unbalanced force
D
centripetal force
9) The momentum of an object is in the same direction as its
A
acceleration
B
velocity
C
force
D
inertia
10) According to Newton's Third Law of motion, when a hammer strikes and exerts force on a nail, the nail
A
disappears into the wood
B
creates friction with the hammer
C
moves at a constant speed
D
exerts an equal and opposite force on the hammer
*select an answer for all questions
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