AVERAGE SPEED AND AVERAGE VELOCITY
SPEED of an object is defined as the DISTANCE TRAVELLED BY IT IN UNIT TIME.
AVERAGE SPEED = TOTAL DISTANCE TRAVELLED TOTAL TIME TAKEN
VELOCITY of an object is defined as the CHANGE IN ITS POSITION IN UNIT TIME. It includes the DIRECTION of motion.
AVERAGE VELOCITY =
DISPLACEMENT TIME INTERVAL
The SI unit of speed and velocity is metres per second written as ms−1.