Positive Physics Quiz

Unbalanced force

two or more forces that are not equal and opposite of one another; can cause change in motion

Weight unit

Newtons

Balanced force

Equal forces acting on an object in opposite directions

1 Newton =

1 kg m/s^2

Weight

A measure of the force of gravity on an object

Force

A push or pull exerted on an object

Tension (T)

A tensile force exerted via a string-like connection between systems; acts in concert with an equal but opposite force at the opposite end of the string

Newton's First Law

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Newton's Second Law

Force = mass x acceleration

Thrust (T)/Applied (A)

Force which is applied to an object by another object

Weight (W)

The force with which a mass is attracted toward the center of the earth by gravity.

Friction (F)

a force that acts against the motion of an object due to the interactions between surfaces in contact

Mass unit

kg

Acceleration unit

m/s^2

Drag (D)

resistance by friction from air or water

Mass

the amount of matter in an object

Normal force (N)

the force perpendicular to a surface that prevents an object from falling through the surface (ex: table)

Newton

unit of force