15. PS.8b - Newton's Laws of Motion

Which of the following is a statement of Newton's First Law of Motion?

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

• Force equals mass times acceleration.

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

• The gravitational force between two objects is inversely proportional to the square of the distance between them.

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VA.PS.8.b

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VA.PS.8.b

A car is traveling at a constant speed of 60 km/h. According to Newton's First Law, what can be inferred about the forces acting on the car?

• The forces are unbalanced.

• There are no forces acting on the car.

• The forces are balanced.

• The car is accelerating.

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VA.PS.8.b

If a force of 20 N is applied to a 4 kg object, what is the acceleration of the object?

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VA.PS.8.b

Which of the following scenarios best illustrates Newton's Third Law of Motion?

• A book resting on a table.

• A rocket launching into space.

• A car accelerating on a highway.

• A ball rolling down a hill.

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VA.PS.8.b

A 10 kg object is at rest. If a force of 50 N is applied, what will be the velocity of the object after 3 seconds?

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VA.PS.8.b

What is the net force acting on an object if it is moving with a constant velocity?

• Zero

• Equal to the gravitational force

• Equal to the applied force

• Equal to the frictional force

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VA.PS.8.b

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VA.PS.8.b

Which of the following best describes the relationship between mass and acceleration according to Newton's Second Law?

• Directly proportional

• Inversely proportional

• No relationship

• Exponentially proportional

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VA.PS.8.b

Which of the following is an example of inertia?

• A ball rolling down a hill.

• A car coming to a stop.

• A book remaining at rest on a table.

• A rocket accelerating in space.

Tags

VA.PS.8.b