Motion, When the position of an object changes compared to another object, Reference point, A place or object that is used to determine if something is in motion or not, True or False?... Motion can be relative to the observer, True (you & your friend in the car seem to not be moving relative to each other, but when you look out the window the trees as reference points tell you that you are moving), Force, Any push or pull, Newtons (N), Unit used to measure force, 2 ways to measure force, Strength and direction, 2 types of forces, Contact (friction) and non-contact (gravity), Example of a contact force, Friction, Examples of non-contact forces, Gravity, magnetism, electricity, Net force, The combination of all forces acting on an object, A net force of zero (0), Occurs when all the forces are balanced on an object, Add the forces together, What you do when the forces are acting in the SAME direction, Subtract the forces, What you do when the forces are acting in opposite directions, Speed, Distance an object travels divided by time it takes (Distance / Time), Instantaneous speed, The speed measured at just one point in time, Average Speed, Total distance in a trip divided by total time the trip took, Slope, Rise / Run, Velocity, The speed an object is going including the DIRECTION it is moving, Acceleration, The rate at which velocity changes, 3 forms of acceleration, Speeding up, slowing down & changing direction, Formula for Acceleration, Final speed - Initial speed / Time, Newton's 1st Law of Motion, An object in motion will stay in motion & an object at rest will stay at rest unless a net force acts upon it, Newton's 2nd Law of Motion, Force = mass x acceleration, Newton's 3rd Law of Motion, For every action there is an equal and opposite reaction, Types of outcomes for collisions, Both objects bounce in opposite directions, come to a rest or one object could exert a larger force on another.

Force & Motion

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