8PS Unit 5 : Forces and Motion Vocab 1

Front

force

Back

A push or pull exerted on an object

Front

speed

Back

distance/time

Front

velocity

Back

Speed in a given direction

Front

Newton's 1st Law of Motion

Back

An object at rest/motion will remain at rest/motion until acted upon by an outside force

Front

inertia

Back

the tendency of an object to resist a change in its motion

Front

constant speed

Back

the rate of change of position in which the same distance is traveled each second

Front

balanced force

Back

two forces acting in opposite directions on an object, and equal in size

Front

unbalanced force

Back

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

Front

contact force

Back

A force that is exerted only when two objects are touching.

Front

non-contact force

Back

a force that one object can apply to another object without touching it