Force and Motion Quiz

According to Newton's First Law, an object at rest will stay at rest and an object in motion will stay in motion unless acted upon by what?

• gravity

• friction

• inertia

• external force

Which of the following is an example of Newton's First Law?

• An object at rest will eventually start moving due to gravity.

• An object at rest will immediately start moving when an external force is applied.

• An object in motion will eventually slow down and stop due to friction.

• An object at rest will stay at rest, and an object in motion will stay in motion with the same speed and direction, unless acted upon by an external force.

What is the formula for Newton's Second Law?

• F = ma

• F = ma^2

• F = mv

• F = m/a

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According to Newton's Second Law, what happens to the acceleration of an object if the force acting on it increases?

• The acceleration of the object decreases.

• The acceleration of the object remains the same.

• The acceleration of the object becomes zero.

• The acceleration of the object increases.

According to Newton's Third Law, for every action, there is an equal and opposite what?

• energy

• motion

• reaction

• force

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Which of the following is an example of Newton's Third Law?

• Throwing a ball and watching it bounce back.

• Pushing against a wall and feeling it push back

• Sitting on a chair and feeling it support your weight.

• Blowing air into a balloon and watching it expand.

Friction is a force that opposes what?

• motion

• energy

• acceleration

• gravity

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Which of the following is an example of friction?

• Blowing air on a piece of paper.

• Walking on a slippery surface.

• Pouring water into a glass.

• Rubbing your hands together

Gravity is a force that attracts objects towards what?

• center of the Moon

• center of the Sun

• center of the galaxy

• center of the Earth

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What is the effect of friction on the speed of a moving object?

• It increases the speed.

• It decreases the speed.

• It does not affect the speed.

• It makes the speed constant.

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