Name: _________________________________________ Date: __________ Hour: __________
Chapter 12 – Forces and Motion
Multiple Choice
Identify the choice that best completes the statement or answers the question.
_____ 1. Force is measured in __________.
a. mass
b. newtons
c. grams
d. liters
_____ 2. Newtons are equal to __________.
a. the amount of mass in an object
b. mass x velocity
c. kg x m/s
d. kg x m/s2
_____ 3. The force that pulls falling objects toward Earth is called __________
a. gravity
b. free fall
c. acceleration
d. air resistance
_____ 4. Air resistance is a type of __________
a. motion
b. acceleration
c. velocity
d. friction
_____ 5. The tendency of an object to resist a change in its motion is known as __________.
a. mass
b. inertia
c. force b.
d. balance
_____ 6. The curved path traveled by a thrown baseball is known as a what?
a. orbiting
b. centripetal acceleration
c. projectile motion
d. centripetal force
_____ 7. Newton’s first law is also known as what?
a. law of mass
b. law of gravity
c. law of inertia
d. law of matter
_____ 8. __________ = mass x velocity
a. momentum
b. weight
c. matter
d. gravity
_____ 9. An attractive force that acts on any two masses is __________.
a. gravitational force
b. electromagnetic force
c. weak nuclear forced
d. strong nuclear force
_____ 10. According to Newton’s third law of motion, when a hammer strikes and exerts force
on a nail, the nail __________.
a. creates a friction with the hammer
b. disappears into the wood
c. exerts an equal force back on the hammer d. moves at a constant speed
_____ 11. How can you increase the momentum of an object?
a. by decreasing its velocity
b. by increasing its mass
c. by increasing its friction
d. by decreasing its acceleration
_____ 12. The force of gravity acting on an object is called __________.
a. gravity
b. mass
c. weight
d. acceleration
_____ 13. Acceleration of an object __________.
a. decreases as mass increases
b. increases as force increases
c. both a and b
d. none of the above
_____ 14. According to Newton’s first law of motion, a moving object that is not acted on by an
unbalanced force will __________.
a. remain in motion
b. transfer its energy to another object
c. eventually come to a stop
d. accelerate in the absence of friction
_____ 15. In physical science, a push or a pull is called a(n)
a. force.
b. inertia
c. acceleration
d. motion
_____ 16. What happens when two forces act in the same direction?
a. they cancel out
b. the stronger one prevails
c. they add together
d. their sum is divided by two
_____ 17. Balanced forces acting on an object __________.
a. always change the object’s motion
b. sometimes change the object’s motion
c. never change the object’s motion
d. are not related to motion
_____ 18. The force that one surface exerts on another when the two rub against each other is
called __________.
a. friction
b. inertia
c. acceleration
d. gravity
_____ 19. Which of the following is an example of rolling friction?
a. your shoes on a sidewalk as you walk
b. bike tires on the road as you ride
c. a boat on the water as it sails
d. two hands rubbing together
_____ 20. The force of gravity acting on a person or object is called its __________.
a. mass
b. weight
c. air resistance
d. free fall.
_____ 21. Air resistance is __________.
a. sliding friction
b. fluid friction
c. rolling friction
d. static friction
_____ 22. The type of force that acts upon an object that is not moving is called what?
a. rolling friction
b. static friction
c. sliding friction
d. fluid friction
_____ 23. Use Newton's second law of motion to calculate the mass of an object when a force of
34 N accelerates the object 4 m/s/s?
a. 0.12 kg
b. 38.0 kg
c. 8.5 kg
d. 136 kg
_____24. Ancient Greek philosopher and philosopher. He incorrectly proposed that force is
required to keep an object moving.
a. Aristotle
b. Galileo
c. Newton
d. none of the above
_____ 25. __________ is the force that opposes the motion of an object through fluid.
a. rolling friction
b. static friction
c. sliding friction
d. fluid friction
_____ 26. What causes an object to move?
a. balanced forces
b. friction
c. mass
d. unbalanced forces
_____ 27. What is the overall force acting on an object after all forces are combined?
a. weight
b. gravitational force
c. friction
d. net force
_____ 28. __________ is the force that acts upon rolling objects.
a. rolling friction
b. static friction
c. sliding friction
d. fluid friction
_____ 29. Italian Scientist. Studied how gravity produces constant acceleration.
a. Aristotle
b. Galileo
c. Newton
d. none of the above
_____ 30. __________ the force that opposes the direction of motion of an object as it slides
over a surface.
a. rolling friction
b. static friction
c. sliding friction
d. fluid friction
_____ 31. English scientist. Built on the work of scientist Galileo. Introduced his laws of motion
in his book Principia.
a. Aristotle
b. Galileo
c. Newton
d. none of the above
_____ 32. According to __________, the acceleration of an object is equal to the net force acting
on it divided by the object's mass.
a. Newton’s first law of motion
b. Newton’s second Law of motion
c. Newton’s third law of motion
d. none of the above
_____ 33. __________ is the force of attraction that holds protons and neutrons together in the
nucleus of an atom.
a. strong nuclear force
b. weak nuclear force
c. gravitational force
d. electromagnetic force
_____ 34. Which universal force is the weakest?
a. strong nuclear force
b. weak nuclear force
c. gravitational force
d. electromagnetic force
_____ 35. __________ act between oppositely charged objects.
a. gravitational forces
b. electric forces
c. magnetic forces
d. friction forces
_____ 36. In Physical Science, what does conservation mean?
a. prevention of waste
b. something has a constant value
_____ 37. __________ states that if no net force acts on a system, then the total momentum of
the system does not change.
a. law of conservation of mass
b. law of conservation of momentum
c. law of conservation of probability
d. none of the above
_____ 38. What causes an increase in speed?
a. greater mass
b. greater friction
c. greater incline
c. greater force
_____ 39. __________ act on certain metals, on the poles of magnets and on moving charges.
a. electric forces
b. magnetic forces
c. gravitational forces
d. friction forces
_____ 40. __________ = mass x acceleration
a. momentum
b. matter
c. gravity
d. weight