7th Grade Ch 1 Vocab

a push or pull on an object

• gravity

• force

• mass

• weight

a push or pull on one object by another object that is touching it

• circular motion

• balanced forces

• contact force

• friction

a force that one object applies to another object without touching it

• net force

• momentum

• centripetal force

• noncontact force

an attractive force that exists between all objects that have mass

• gravity

• force

• net force

• mass

the amount of matter in an object

• force

• weight

• mass

• net force

the gravitational force exerted on an object

• net force

• weight

• mass

• inertia

a contact force that resists the sliding motion of two surfaces that are touching

• inertia

• Newton's second law of motion

• friction

• force

the combination of all the forces acting on an object

• inertia

• net force

• force

• weight

forces acting on an object that combine and form a net force of zero

• balanced forces

• net force

• force

• gravity

forces acting on an object that combine and form a net force that is not zero

• force

• net force

• weight

• unbalanced forces