Understanding Forces in Motion

Which force is responsible for keeping us grounded on Earth?

• Friction

• Gravity

• Magnetism

• Applied force

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NGSS.MS-PS2-2

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What type of force is exerted by a surface to support the weight of an object resting on it?

• Friction

• Normal force

• Gravity

• Magnetism

If a book is sliding across a table and comes to a stop, which force is primarily responsible for stopping the book?

• Gravity

• Friction

• Magnetism

• Applied force

Tags

NGSS.MS-PS2-2

A magnet attracts a paperclip. Which type of force is acting between the magnet and the paperclip?

• Gravity

• Friction

• Magnetism

• Normal force

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A person pushes a box with a force of 10 N to the right, and friction exerts a force of 4 N to the left. What is the net force on the box?

• 6 N to the right

• 14 N to the right

• 6 N to the left

• 14 N to the left

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NGSS.MS-PS2-2

If the forces acting on an object are balanced, what can be said about the object's motion?

• The object will accelerate.

• The object will decelerate.

• The object will remain at rest or move at a constant speed.

• The object will change direction.

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NGSS.MS-PS2-2

According to Newton's Third Law of Motion, what happens when you push against a wall?

• The wall moves.

• The wall pushes back with an equal and opposite force.

• The wall exerts no force.

• The wall exerts a greater force.

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NGSS.MS-PS2-1

A car is moving at a constant speed on a straight road. What can be said about the forces acting on the car?

• The forces are unbalanced.

• The forces are balanced.

• There are no forces acting on the car.

• Only gravity is acting on the car.

Which of the following is an example of an applied force?

• A magnet attracting a nail

• A person pushing a shopping cart

• A book resting on a table

• A ball falling to the ground

If two people are pulling on a rope in opposite directions with equal force, what is the net force on the rope?

• Greater than zero

• Zero

• Less than zero

• Cannot be determined

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NGSS.MS-PS2-2