Forces and Motion Review

Which of the following best describes displacement?

• The total distance an object has traveled

• The object's distance and direction from its starting point

• The speed of an object at a given moment

• The force acting on an object

A cyclist increases speed while riding down a hill. Which force is responsible for the acceleration?

• Gravity

• Friction

• Normal force

• Air resistance

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Two skaters push off from each other with equal force but in opposite directions. What principle explains their motion?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Law of Conservation of Energy

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A box is sitting on the floor. The force that prevents it from moving is:

• Gravity

• Friction

• Normal force

• Tension

An object moving at constant velocity has:

• A net force acting on it

• No forces acting on it

• Balanced forces acting on it

• An increasing acceleration

If a car suddenly stops, the passengers move forward due to:

• Gravity

• Acceleration

• Friction

• Inertia

A soccer ball is kicked with a force of 30 N. If a second identical ball is kicked with 60 N, how does its acceleration compare?

• Half as much

• The same

• Twice as much

• Four times as much

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When an object moves at a constant speed in a circular path, what is happening?

• Its velocity is constant

• It experiences no net force

• It is accelerating due to a change in direction

• Its momentum is decreasing

A force of 100 N is applied to an object with a mass of 10 kg. What is its acceleration?

• 5 m/s²

• 10 m/s²

• 15 m/s²

• 20 m/s²

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What happens to gravitational force when the distance between two objects doubles?

• It doubles

• It is cut in half

• It is reduced to a quarter

• It remains unchanged