Unit 3 Contact Forces

Front

What is a contact force?

Back

A contact force is a force that occurs when two objects are physically touching each other.

Front

What causes a rolling object to stop?

Back

Friction is the force that causes a rolling object to stop.

Front

How can kinetic energy be increased the most?

Back

Doubling the speed of an object has the biggest impact on increasing its kinetic energy.

Front

What is a non-contact force?

Back

A non-contact force is a force that acts between two objects that are not touching each other.

Front

What happens to air resistance on a windy day?

Back

Air resistance increases on a windy day.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it is in contact with another surface.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object has due to its motion.

Front

What is the relationship between mass and kinetic energy?

Back

Increasing the mass of an object increases its kinetic energy, but speed has a greater impact.

Front

What are examples of contact forces?

Back

Examples of contact forces include friction, tension, and normal force.

Front

What are examples of non-contact forces?

Back

Examples of non-contact forces include gravitational force, magnetic force, and electrostatic force.