2024-25 8th STAAR RC 2 Force & Motion Review

Newton’s Second Law states that acceleration is directly proportional to:

• Mass

• Force

• Gravity

• Friction

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According to Newton’s Second Law, what happens if you double the force applied to an object while keeping its mass the same?

• The acceleration doubles

• The acceleration is halved

• The object moves at a constant speed

• The force has no effect

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What is the equation for Newton’s Second Law of Motion?

• F = m × a

• F = m + a

• F = m ÷ a

• F = a ÷ m

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A 10 kg object is pushed with a force of 20 N. What is its acceleration?

• 2 m/s²

• 10 m/s²

• 20 m/s²

• 0.5 m/s²

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If a 5 kg object accelerates at 4 m/s², what force is applied?

• 20 N

• 9.8 N

• 1.25 N

• 10 N

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What happens to acceleration when the mass of an object is increased but the force remains the same?

• Acceleration increases

• Acceleration decreases

• Acceleration stays the same

• Acceleration becomes zero

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Which law explains why a person not wearing a seatbelt keeps moving forward when a car suddenly stops?

• Newton’s First Law

• Newton’s Second Law

• Newton’s Third Law

• The Law of Gravity

Which law is best demonstrated when a rocket launches into space by expelling gases downward?

• Newton’s First Law

• Newton’s Second Law

• Newton’s Third Law

• The Law of Universal Gravitation

Which of Newton’s Laws best explains why a soccer ball accelerates when kicked?

• First Law

• Second Law

• Third Law

• Law of Gravity

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How do Newton’s Laws apply to amusement park rides?

• Riders feel forces due to acceleration

• Inertia keeps them moving in loops

• The ride pushes against the riders

• All of the above.

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