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Quiz: Ch. 13 – Forces
Multiple Choice
_____ 1. Force is
A) a push B) a pull C) the ability to change motion D) all of the above
_____ 2. Forces that are opposite and equal are called
A) balanced B) friction C) unbalanced D) gravitational
_____ 3. The force that opposes the motion of an object is called
A) acceleration B) friction C) density D) gravity
_____ 4. The type of friction that exists for a shark swimming in the ocean is
A) sliding B) hydraulic C) rolling D) fluid
_____ 5. The property of matter that resists a change in its motion is
A) inertia B) friction C) gravity D) weight
_____ 6. According to Newton’s second law of motion, force equals mass times
A) inertia B) weight C) direction D) acceleration
_____ 7. The force of attraction that exists between all objects in the universe is
A) friction B) inertia C) momentum D) gravity
_____ 8. A change in the force of gravity pulling on you will change your
A) mass B) air resistance C) inertia D) weight
True or False
_____ 9. A force can set an object in motion, stop its motion, or change the speed and
direction of its motion.
_____ 10. The combined force of unbalanced forces is always zero.
_____ 11. Friction is a force that always acts in a direction opposite to the motion of the
moving object.
_____ 12. Objects in constant motion will remain in constant motion unless acted upon
by balanced forces.
_____ 13. Force equals mass times velocity.
_____ 14. Mass is the measure of the force of gravity.
_____ 15. In a vacuum, a heavier object will fall to the Earth faster than a lighter object.
Unit 5 (Ch. 13) – Motion & Forces
Bach
02/22/10
Quiz: Ch. 13 – ANSWER KEY
_D_ 1. Force is
A) a push B) a pull C) the ability to change motion D) all of the above
GRADING SCALE
A__ 2. Forces that are opposite and equal are called
A = 30 – 27
A) balanced B) friction C) unbalanced D) gravitational
B = 26 – 24
C
= 23 – 21
_B 3. The force that opposes the motion of an object is called
D = 20 – 18
A) acceleration B) friction C) density D) gravity
F < 17
D_ 4. The type of friction that exists for a shark swimming in the ocean is
A) sliding B) hydraulic C) rolling D) fluid
A__ 5. The property of matter that resists a change in its motion is
A) inertia B) friction C) gravity D) weight
D__ 6. According to Newton’s second law of motion, force equals mass times
A) inertia B) weight C) direction D) acceleration
D_ 7. The force of attraction that exists between all objects in the universe is
A) friction B) inertia C) momentum D) gravity
D__ 8. A change in the force of gravity pulling on you will change your
A) mass B) air resistance C) inertia D) weight
True or False
T__ 9. A force can set an object in motion, stop its motion, or change the speed and
direction of its motion.
F__ 10. The combined force of unbalanced forces is always zero.
T__ 11. Friction is a force that always acts in a direction opposite to the motion of the
moving object.
F__ 12. Objects in constant motion will remain in constant motion unless acted upon
by balanced forces.
F__ 13. Force equals mass times velocity.
F__ 14. Mass is the measure of the force of gravity.
F__ 15. In a vacuum, a heavier object will fall to the Earth faster than a lighter object.
Unit 5 (Ch. 13) – Motion & Forces
Bach
02/22/10