Types of Forces

What is a contact force?

• A force that can act on an object without touching it

• A force that arises when two objects are in physical contact with each other

• A force that pulls objects towards each other

• A force that happens when two surfaces rub against each other

Which force resists motion when two surfaces are in contact?

• Friction force

• Tension force

• Applied force

• Normal force

Which force keeps a ball hanging from a string?

• Gravity force

• Friction force

• Air resistance force

• Tension force

What force opposes the motion of a paraglider?

• Gravity

• Normal

• Air resistance

• Tension

What force does a person's hand exert on a box when pushing it to the right?

• Gravity force

• Friction force

• Air resistance force

• Applied force

Which force prevents a book from falling through a table?

• Gravity force

• Friction force

• Air resistance force

• Normal force

Which force acts between magnets or magnetic objects?

• Gravitational force

• Frictional force

• Magnetic force

• Tensile force

What force acts between two objects that have an electric charge?

• Gravitational force

• Frictional force

• Electrostatic force

• Tensile force

Check all of the forces that are acting on this object (Oscar the chimp).

• Normal Force

• Frictional Force

• Gravitational Force

• Tension Force

• Applied Force

Check all of the forces that are acting on this object (the book)

• Normal Force

• Frictional Force

• Gravitational Force

• Tension Force

• Applied Force