UNIT QUIZ: Laws of Motion, Gravity, and Friction

Who was the English scientist and mathematician famous for his discovery of the law of gravity also discovered the three laws of motion?

• Alexander the Great

• Albert Einstein

• Aristotle

• Sir Isaac Newton

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What law of motion states that an object in motion tends to stay in motion and an object at rest tends to   stay at rest unless acted upon by an unbalanced force?

• Newton's First Law
• Newton's Second Law

• Newton's Third Law

• Law of Action-Reaction

Which law of motion states that when an unbalanced force is applied to a particular mass, it will cause the mass to accelerate?

• Law of Inertia
• Newton's Third Law of Motion
• Newton's Second Law of Motion
• Newton's First Law of Motion

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What law of motion states that for every action there is an equal and opposite reaction.?

• Law of inertia
• Newton's first law of motion
• Newton's third law of motion
• Newton's second law of motion

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A car is traveling at 30 m/s. What is the speed of the car if a BALANCED force is applied to the car?

• 30 m/s
• 50 m/s
• 40 m/s
• 20 m/s

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The forces of an object are equal and opposite. What an can be said about the forces?

• The forces are unbalanced.
• The forces are balanced.
• The forces are parallel.
• The forces are perpendicular.

What happens to the acceleration of an object if an UNBALANCED force is applied to it?

• It accelerates in the direction of the unbalanced force.
• It accelerates in the opposite direction of the unbalanced force.
• It decelerates in the direction opposite to the unbalanced force.

• It remains stationary.

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In a tug-of-war battle, the team on the right exerted 30N on the rope. The team on the left exerted 20N. Which team will win the tug of war?

• Team on the left
• Both teams will tie
• Team on the right

• The team who has the greater mass will win.

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What is the value of acceleration due to gravity (g)?

• 10.2 m/s^2
• 8.5 m/s^2
• 11.3 m/s^2
• 9.8 m/s^2

What do you call the tendency of an object to resist changes in its state of motion​?

• inertia
• acceleration
• velocity
• force