Question

Define speed and average speed​

Answer 1

Answer:

Average speed is calculated by dividing the total distance that something has traveled by the total amount of time it took it to travel that distance. ... Average speed is usually applied to vehicles like cars, trains, and airplanes. It is often measured in miles per hour (mph) or kilometers per hour (kph).

Explanation:

Speed is a scalar quantity that refers to "how fast an object is moving." Speed can be thought of as the rate at which an object covers distance. A fast-moving object has a high speed and covers a relatively large distance in a short amount of time.

Answer 2

Speed is the distance covered by an object in a unit time.

Speed =$\frac{distance travelled}{time taken}$

SI unit of speed is metre per second (m/s).