Contact and Non-Contact Forces

Front

What is a balanced force?

Back

A balanced force occurs when the net force acting on an object is zero, resulting in no change in the object's motion.

Front

What is an unbalanced force?

Back

An unbalanced force occurs when the net force acting on an object is not zero, causing the object to accelerate in the direction of the net force.

Front

What is a contact force?

Back

A contact force is a force that requires physical contact between two objects, such as friction, tension, and normal force.

Front

What is a non-contact force?

Back

A non-contact force is a force that acts on an object without physical contact, such as gravitational force, magnetic force, and electrostatic force.

Front

Give an example of a contact force.

Back

Wind blowing leaves across the yard is an example of a contact force.

Front

Give an example of a non-contact force.

Back

The moon orbiting the Earth is an example of a non-contact force.

Front

What factors affect gravitational force?

Back

Distance and mass are two factors that affect gravitational force.

Front

How can an electromagnet be made stronger?

Back

An electromagnet can be made stronger by adding more coils of wire to the nail.

Front

What is gravitational force?

Back

Gravitational force is the attraction between two masses, which depends on their masses and the distance between them.

Front

What is magnetic force?

Back

Magnetic force is the attraction or repulsion between magnetic poles, which can act at a distance.