Final answer:
Speed is a scalar quantity that measures how fast an object is moving, while velocity is a vector quantity that includes both the speed and direction of motion.
Step-by-step explanation:
Speed is a scalar quantity that describes how fast an object is moving, regardless of its direction. It is defined as the total distance traveled divided by the time taken. The equation for speed is:
Speed = Distance / Time
Velocity, on the other hand, is a vector quantity that describes the speed and direction of an object. It takes into account both the magnitude (speed) and direction of motion. The equation for velocity is:
Velocity = Displacement / Time
So while speed measures only how fast an object is moving, velocity indicates both the speed and direction of motion.