Force and Motion Quiz

Can a force cause a change in an object or its motion? If so, how?

What kind of force is a magnetic force? Be sure to explain why.

• A magnetic force is a contact force. There is a magnetic field the magnets need to touch.

• A magnetic force is a noncontact force. There is a magnetic field so the magnets don’t have to touch in order to work.

• There is no such thing as a magnetic force. Magnets don't need forces to work.

• None of the

What is a balanced system when talking about forces?

• When the net force acting on an object is positive
• When the net force acting on an object is negative
• When the net force acting on an object is random
• When the net force acting on an object is zero

What is an unbalanced system when talking about forces?

• The net force acting on an object is not equal to zero.
• The object is not experiencing any force.
• The forces acting on an object are balanced.
• The net force acting on an object is equal to zero.

Do balanced and unbalanced forces both have forces acting on them?

• No
• Only balanced forces have forces acting on them
• Unbalanced forces have no forces acting on them
• Yes, both balanced and unbalanced have forces acting on them.

How are velocity and acceleration related?

• Acceleration is the rate of change of velocity over time.
• Velocity and acceleration are completely unrelated
• Velocity and acceleration have an inverse relationship
• Acceleration is the same as velocity

Draw and label an example of a force diagram.

How do you explain a contact and noncontact force?

• Contact force and noncontact force are explained based on whether two objects are in direct physical contact or not.
• Contact force is when two objects are not in physical contact, while noncontact force is when two objects are in direct physical contact
• Contact force is when two objects are in indirect physical contact, while noncontact force is when two objects are in direct physical contact
• Contact force is when two objects are in direct physical contact, while noncontact force is when two objects are in indirect physical contact

How do the properties of objects affect gravity and friction?

• They have no effect on gravity or friction
• They can increase the speed of friction
• They can reverse the direction of gravity
• They can affect gravity by influencing the gravitational force between objects, and they can affect friction by determining the roughness or smoothness of the surfaces in contact.

How does an object's mass affect the rate at which it falls? (the relationship between the two)

• The rate of falling decreases as the mass of the object increases
• The rate of falling is not affected by the mass of the object
• The rate at which an object falls is not affected by its mass.
• The rate of falling increases as the mass of the object increases