The formula for speed is speed = distance/time, where distance is the total distance traveled and time is the total time taken to travel that distance.
To calculate speed, you simply divide the distance traveled by the time taken to travel that distance. This will give you the average speed for that journey.
The most common units used to measure speed are meters per second (m/s), kilometers per hour (km/h), and miles per hour (mph). However, other units such as feet per second (ft/s) and knots (nautical miles per hour) may also be used.
Yes, speed can be negative. This usually occurs when an object is moving in the opposite direction of the positive direction. For example, if an object is moving west and the positive direction is east, its speed would be negative.
While speed measures the rate at which an object is moving, velocity also takes into account the direction of the movement. This means that two objects can have the same speed but different velocities if they are moving in different directions.