Forces and Motion Practice Quiz

What is Newton's Third Law of Motion?

• For every action, there is an equal and opposite reaction.

• An object in motion stays in motion unless acted upon by an external force.

• Force equals mass times acceleration.

• The force of gravity is proportional to the mass of the object.

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What is the force of gravity acting on an object called?

• Mass

• Weight

• Inertia

• Momentum

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Which of the following statements is true about gravitational interactions?

• Gravitational interactions are repulsive.

• Gravitational interactions are attractive and depend on the masses of interacting objects.

• Gravitational interactions do not depend on mass.

• Gravitational interactions are stronger than electromagnetic interactions.

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A force of attraction between objects that is due to their masses.

• Solar Flare

• Orbit

• Gravity

• Centripetal Force

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Why would one ball accelerate more than the other when pushed with the same amount of force?

• Different weights

• Different forces

• Different masses

• Different sizes

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Plan an investigation to determine how the mass of an object affects its acceleration when a constant force is applied.

• Use a heavier object and a lighter object, apply the same force, and measure their accelerations.

• Use objects of the same mass and apply different forces to measure acceleration.

• Use a single object and apply varying forces to measure acceleration.

• Use objects of different shapes and apply the same force to measure acceleration.

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Construct an argument using evidence to support the claim that gravitational interactions depend on the masses of interacting objects.

• Larger masses exert a stronger gravitational force, as evidenced by the gravitational pull of planets.

• Gravitational interactions are the same regardless of mass, as shown by the moon's orbit.

• Gravitational interactions are weaker with larger masses, as seen in small objects.

• Gravitational interactions do not depend on mass, as shown by the sun's gravity.

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Apply Newton's Third Law to design a solution to a problem involving the motion of two colliding objects.

• Design a bumper system for cars that absorbs impact and reduces force on passengers.

• Design a system that increases the speed of colliding objects.

• Design a system that eliminates the force of collision.

• Design a system that increases the mass of colliding objects.

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Calculate the Net Force.

• 60N, Left

• 40N, Right

• 0N

• 60N, Right

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If these boys are pulling with the same amount of force. What will happen?

• The boy in blue will win.

• They will not move at all.

• The boy in red will win.

• Both will fall down.

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