Contact & Noncontact Forces Test Review

Front

What is a contact force?

Back

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 force that acts on an object without physical contact, such as gravity, magnetic force, and electrostatic force.

Front

What is normal force?

Back

The support force exerted upon an object that is in contact with a stable surface, acting perpendicular to the surface.

Front

What keeps the planets in orbit around the sun?

Back

Gravity is the force that keeps the planets in orbit around the sun.

Front

What force does a person work against when jumping?

Back

Gravity is the force that a person works against when jumping.

Front

What is magnetic force?

Back

A non-contact force that can attract or repel objects with magnetic properties.

Front

What is friction?

Back

A contact force that opposes the motion of an object, acting parallel to the surfaces in contact.

Front

What happens to a ball rolling down a hill?

Back

Gravity causes the ball to roll down the hill, while friction slows it down and eventually stops it.

Front

What is the role of air resistance?

Back

Air resistance is a force that opposes the motion of an object moving through the air, contributing to slowing it down.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion, while unbalanced forces cause an object to accelerate.