forces n motion vocab

Force

a push or pull on something that changes the motion of an object

weight

a measure of the gravitational force exerted on an object

mass

a measure of the amount of matter in an object

gravity

a force of attraction between objects that is due to their masses

Contact force

force that requires direct physical contact

non-contact force

a force that acts on an object without any physical contact

Electrical Force

attractive or repulsive forces between particles that are caused by their electric charges

Magnetic Forec

the space where a magnetic effect can be observed

Friction

a force that opposes the relative motion of 2 surfaces in contact

speed

the rate at which something moves

velocity

the speed of something at a given direction.(velocity is a measure of speed)

Balanced force

forces of equal strength acting on an object in opposite directions

unbalanced force

forces that cause an object to accelerate or change its state of motion

net force

the total force acting on an object calculated by adding all the forces acting on it, taking into account their direction

acceleration

the change of velocity per unit of time

law of universal gravitation

every object in the universe with mass attracts every other object