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Newton’s Laws
of Motion
Chapter 2 Section 2 Review
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A. An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
B. Every action has an equal and opposite reaction.
C. The acceleration of an object depends on its mass and the amount of force applied.
D. You must eat an apple a day to be healthy
1. What is Newton’s First Law?
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A. An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
ANSWER: Newton’s First Law is…
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A. An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
B. Every action has an equal and opposite reaction.
C. The acceleration of an object depends on its mass and the amount of force applied.
D. You must eat an apple a day to be healthy
2. What is Newton’s Second Law?
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C. The acceleration of an object depends on its mass and the amount of force applied.
ANSWER: Newton’s Second Law is…
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A. An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
B. Every action has an equal and opposite reaction.
C. The acceleration of an object depends on its mass and the amount of force applied.
D. You must eat an apple a day to be healthy
3. What is Newton’s Third Law?
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B. Every action has an equal and opposite reaction.
ANSWER: Newton’s Third Law is…
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a. is greater than the action of your weight.
b. is equal to the action of your weight.
c. is determined by many factors.
d. varies.
4. The reaction force of a chair you are sitting on…
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b. is equal to the action of your weight.
Answer:
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a. At rest b. In motionc. Both at rest and in motiond. Neither at rest or in motion
5. If you are sitting still on a moving bus, is your body at rest or in motion?
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b. In motion
ANSWER
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a. F= m × a b. m=F × a c. a=m ÷ F d. F=m ÷ a
6. Which of the following is the equation for Newton’s second law of motion?
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a. F= m × a
ANSWER: The equation for Newton’s Second Law is…
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a. Decreasing the mass of the object
b. Increasing the mass of the object
c. Increasing the force pushing the object
d. Both A and C
7. Which of the following will increase the acceleration of an object that is pushed by a force?
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D. Both A and C
ANSWER
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a. Inertia b. Acceleration c. Friction d. Speed
8. Which is a common unbalanced force acting on objects in motion?
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c. Friction
ANSWER:
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a. 9.8 m/s/sb. 100 gc. 1 Nd. 4.2 m/s/s
9. What is the amount of acceleration due to gravity?
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A. 9.8 m/s/s
ANSWER: The amount of acceleration due to gravity is…
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a. remain in motion b. eventually come to a stop c. change its momentum d. accelerate
10. According to Newton’s first law of motion, a moving object that is NOT acted on by an unbalanced force will…
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a. remain in motion
ANSWER
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a. They provide unbalanced forces to stop the motion of the people.b. They prevent people from hitting the windshield or dashboard.c. It’s fun when they inflate.d. Both a & b.
11. Why are airbags important in cars?
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d. Both a & b.
ANSWER
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a. The forces between a bat and a ball b. The attractive force between a falling ball and Earth c. The force of propulsion and the force of gravity on an airplane d. The forces between a grasshopper and the ground
12. Which of the following is NOT an action/reaction force pair?
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c. The force of propulsion and the force of gravity on an airplane
ANSWER
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a. a pair.b. equal in size.c. opposite in direction.d. all of the above.
13. The action force and the reaction force are…
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d. all of the above.
ANSWER
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a. increaseb. decreasec. doubled. stay the same
14. Acceleration will _______ when a larger force is exerted.
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a. increase
ANSWER
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a. the same as gravity.b. very similar to friction.c. the tendency of matter to resist a change in motion.
d. a country in Asia.
15. Inertia is…
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c. the tendency of matter to resist a change in motion.
ANSWER: Inertia is…
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Remember to study!Study some more! The review will be available on the website after school today!
QUIZ ON MONDAY!