Term | Definition |
force | a push or a pull |
motion | the movement of an object |
magnetism | a force that acts at a distance and cannot be seen |
gravity | a pull/force that attracts objects to each other |
friction | a force that opposes motion between two surfaces that are touching |
lubricants | substances used to reduce friction by making surfaces smoother (like oil, grease, etc.) |
position | an object's location relative to another object |
direction | the course or path that an object is moving, can be determined by reading a compass |
speed | a measure of how fast an object is moving |
balanced forces | forces that do not change the motion of objects |
unbalanced forces | forces that change the rate and direction of the motion of objects |
rate of motion | the speed of an object, how fast or slow an object is moving |
Newton's 1st Law of Motion | states that an object at rest will stay at rest or an object in motion will stay in motion unless acted on by an outside force |
Newton's 2nd Law of Motion | states that Force = Mass x Acceleration, the greater the mass of an object is, the more force is needed to accelerate it |
Newton's 3rd Law of Motion | states that for every action, there is an equal and opposite reaction |
distance-time graph | used to illustrate the motion of an object (shows distance traveled over time) |
mass | the amount of matter in an object, affects how much force is needed to accelerate it |