Physics Lab 1 Graph Matching Mr. Chin-Sung Lin

Kinematics

Kinematics is the branch of classical mechanics that describes the motion of objects without consideration of the forces that cause the motion

Displacement A displacement (d) is a vector quantity A displacement represents the length and direction of the shortest distance from the initial to the final position of an object Displacement

Displacement vs. Time The object is at rest at the origin t d d = 0, slope = 0

Displacement vs. Time The object is at rest at location b t d d = b, slope = 0 b

Displacement vs. Time The object is moving in positive direction at constant rate (velocity, v) from origin t d slope = v

Displacement vs. Time The object is moving in positive direction at constant rate (velocity, v) from location b t d slope = v b

Displacement vs. Time t d slope = v The object is moving in negative direction at constant rate (velocity, v) from origin

Displacement vs. Time t d slope = v The object is moving in negative direction at constant rate (velocity, v) from location b b

Velocity A velocity (v) is a vector quantity Velocity is the measurement of the rate and direction of change in the position/displacement (d) of an object v = d / t

Velocity Velocity is the slope of the displacement-time (d-t) graph t d slope = v (velocity)

Velocity vs. Time The object is at rest at the origin t d d = 0, slope = 0

Velocity vs. Time The object is at rest at the origin t d d = 0, slope = 0 t v v = 0, slope = 0

Velocity vs. Time The object is at rest at location b t d d = b, slope = 0 b

Velocity vs. Time The object is at rest at location b t d d = b, slope = 0 b t v v = 0, slope = 0

Velocity vs. Time The object is moving in positive direction at constant rate (velocity, v) from origin t d slope = v

Velocity vs. Time The object is moving in positive direction at constant rate (velocity, v) from origin t d slope = v t v v = v, slope = 0

Velocity vs. Time The object is moving in positive direction at constant rate (velocity, v) from location b t d slope = vb

Velocity vs. Time The object is moving in positive direction at constant rate (velocity, v) from location b t d slope = vb t v v = v, slope = 0

Velocity vs. Time t d slope = v The object is moving in negative direction at constant rate (velocity, v) from origin

Velocity vs. Time t d slope = v The object is moving in negative direction at constant rate (velocity, v) from origin t v v = v, slope = 0

Velocity vs. Time t d slope = v The object is moving in negative direction at constant rate (velocity, v) from location b b

Velocity vs. Time t d slope = v The object is moving in negative direction at constant rate (velocity, v) from location b b t v v = v, slope = 0

Acceleration A acceleration (a) is a vector quantity acceleration is the rate of change of velocity with time a = Δv / t

Acceleration Acceleration is the slope of the velocity-time (v-t) graph t v slope = a (acceleration)