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1. 
What is the measurement of the combination of the mass of an object and its speed?
A.
conservation
B.
momentum
C.
motion
D.
acceleration
2. 
When one object exerts a force on another object, the pair of forces that act are called:
A.
action - reaction forces.
B.
balanced - unbalanced forces.
C.
friction - drag forces.
D.
positive - negative forces.
3. 
According to Newton´s second law of motion:
A.
The total momentun of objects does not change when they collide.
B.
An object in motion tends to remain in motion unless acted upon by an unbalanced force.
C.
For every action force there is an equal and opposite reaction force.
D.
Acceleration depends on the mass of an object and the amount of force applied to it.
4. 
If there were no measurable gravity, a person would...
A.
have less mass.
B.
weigh more.
C.
feel weightlessness
D.
not have any momentum.
5. 
According to Newton´s third law of motion:
A.
Acceleration depends on the mass of an object and the amount of force applied to it.
B.
The total momentum of an object does not change when they collide.
C.
An object in motione tends to remain in motion unless acted upon by an unbalanced force
D.
For every action force there is an equal and opposite reaction force.