Newton’s Laws of Motion Quiz

Isaac Newton proposed three laws of motion. Which one of the following statements best explains why a person is propelled forward when a car suddenly stops?

• Acceleration is proportional to the net force on an object.
• An increase in force will result in a decrease in acceleration.
• The stopping car is an action that results in a person moving forward (reaction).
• An object in motion stays in motion until an unbalanced force acts on it.

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According to Newton’s 2nd Law of Motion, what will happen to the object below if the pushing force were doubled?

• The acceleration of the object will also double.
• The acceleration of the object will decrease by ½.
• The object will stop.
• The object’s mass will decrease.

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Which of the following best explains Newton’s 2nd Law of Motion.

• An object at rest stays at rest unless an unbalanced force acts on it.
• The acceleration of an object is dependent upon the object’s force and mass.
• For every action, there is an equal and opposite reaction.
• An object in motion will stay in motion unless an unbalanced force acts on it.

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According to Newton’s 3rd Law of Motion, how many balls will be expelled to the right, when one ball is pulled and released on the left?

• One ball will be expelled to the right.
• Two balls will be expelled to the right.
• Three balls will be expelled to the right.
• There will be no motion.

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What would be the mass of an object that has a force of 88N and an acceleration of 12 m/s²?

• 1056 kg
• 7.33 kg
• 176 kg
• 0.14 kg

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What is the net force of the car in the picture below?

• 0 N
• 10 N right

• 3 N right

• 7 N left

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A sled is accelerating down a hill at a rate of 1 m/s². If the mass of the sled is suddenly cut in half and the net force on the sled is doubled, what is the acceleration of the sled?

• 0.5 m/s²
• 1 m/s²
• 2 m/s²
• 4 m/s²

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OH.SCI.8.8.PS.2.b

The tendency of an object to resist changes in its motion is...

• inertia
• force
• acceleration
• velocity

Which law best explains why people remain in motion when a car crashes, if they are not wearing a seat belt?

• Newton's Law of Inertia
• Newton's Law of F=ma
• Newton's Law of Force Pairs
• Newton's Law of Biology

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The picture is an example of Newton's...

• 1st Law

• 2nd Law

• 3rd Law

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