Path Length (Distance) Vs. Displacement
Path Length: It is the distance between two points along a straight line. It is scalar quantity.
Displacement: It is the change in position in a particular time interval. It is vector quantity. Change is position is usually denoted by Δx (x2-x1) and change in time is denoted by Δt (t2-t1).
Position-Time, Velocity-Time and Acceleration-Time Graph
|Criteria||P-T Graph||V-T Graph||A-T Graph|
|X and Y axis||Time and Position||Time and Velocity||Time and Acceleration|
|Slope||It represents velocity of an object||It represents acceleration of an object.||It represents the jerk or push of a moving object.|
|Straight slope||Uniform velocity||Uniform acceleration||Uniform jerk|
|Curvy Slope||Change in velocity||Change in acceleration||Change in the amount of push/jerk|
Average Velocity and Average Speed
|Criteria||Average Velocity||Average Speed|
|Definition||Change in position or displacement divided by time interval.||Total path length travelled divided by total time interval regardless of direction.|
|Formula||Avg speed = Total path length/Total time interval|
|Scalar or Vector||Vector||Scalar|
|Sign||Can be positive or negative||Always positive|