Motion and Forces Quiz

What is a reference point used for?

• To determine the weight of an object

• To calculate the force exerted on an object

• To measure the speed of an object

• To determine whether something is in motion

What is the unit for the strength of a force in the International System of Units?

• Second (s)

• Newton (N)

• Kilogram (kg)

• Meter (m)

Which of the following is an example of a contact force?

• Electrical force

• Magnetism

• Gravity

• Friction

What is the force that pulls objects toward each other as a result of their masses?

• Electrical force

• Magnetism

• Friction

• Gravity

When two forces acting on an object are equal in strength and opposite in direction, they are called:

• Contact forces

• Unbalanced forces

• Noncontact forces

• Balanced forces

If the net force acting on an object is zero, the forces are considered to be:

• Noncontact forces

• Balanced

• Unbalanced

• Contact forces

What happens when the forces acting on an object are not equal in strength and opposite in direction?

• They are unbalanced forces

• They are balanced forces

• They have no effect on the object

• They cancel each other out

What is the combination of all the forces acting on an object called?

• Applied force

• Balanced force

• Frictional force

• Net force

If the forces acting on an object are in the same direction, what is the net force?

• The sum of the forces

• Not determined

• The difference of the forces

• Zero

What is the force that two surfaces exert on each other when they rub against each other?

• Electrical force

• Magnetism

• Gravity

• Friction