1-D Kinematics

Science of describing motion. Words Diagrams Numbers Graphs Equations Develop sophosticated mental models that describe the motion of real-world objects. Kinematics

System used to describe motion that indicates when the zero point of the variable is located and the direction in which the values of the variable increase. Origin: point in which the variable has a value of zero. Position vector: arrow used to identify the position of the moving object at any given time. Length of the position vector is proportional to the distance of the object from the origin and points of origin to the location of the moving object at a particular time. Coordinate Sytems

Quantities that are described by magnitude (numerical value) only. Time Mass Temperature Scalars

Describe magnitude and direction Acceleration Velocity Vectors

Distance: scalar quantity. It is referring to how far an object moves “distance covered”. d 0 to d 1 Displacement: vector quantity. Refers to the distance and direction Δd = d 1 – d 0 Distance and Displacement

1 1 Distance vs Displacement

Velocity vs Acceleration

Acceleration: rate at which an object changes it’s velocity. Vector quantity Constant Acceleration : when an accelerating object changes Its velocity by the same amount each second. Average acceleration = Δ velocity/time or a = v f - v i / t