Science 6 Chapter 6 Test Set A Question Preview (ID: 34965)


Force. TEACHERS: click here for quick copy question ID numbers.

What happens when two forces act in the same direction?
a) They cancel each other out.
b) The stronger one prevails.
c) Their strengths are added.
d) Their sum divided by two is the total force.

The greater the mass of an object
a) the easier the object starts moving
b) the greater its inertia
c) the more balanced it is
d) the more space it takes up

The force of gravity on a person or object on the surface of a planet is called
a) mass
b) terminal velocity
c) weight
d) free fall

The force that one surface exerts on another when the two rub against each other is called
a) friction
b) acceleration
c) inertia
d) gravity

The law of universal gravitation states that any two objects in the universe that have mass, without exception
a) attract each other
b) repel each other
c) combine to provide a balanced force
d) create friction

Forces can be added together only if they are
a) acting on the same object
b) balanced forces
c) unaffected by gravity
d) substantial

According to the law of conservation of momentum, when two objects collide in the absence of outside forces,
a) velocity increases
b) velocity decreases
c) the objects have the same momentum before and after they collide
d) the objects have more momentum after they collide than they did before

Any force that causes an object to move in a circle is a(n)
a) balanced force
b) unbalanced force
c) gravitational force
d) centripetal force

The momentum of an object is in the same direction as its
a) force
b) acceleration
c) velocity
d) inertia

According to Newton's Third Law of motion, when a hammer strikes and exerts force on a nail, the nail
a) creates friction with the hammer
b) disappears into the wood
c) exerts an equal and opposite force on the hammer
d) moves at a constant speed

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