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Speed refers to how fast or slow something moves. It is calculated using the distance traveled and the time taken. The SI unit of speed is meters per second.
For example, a sprinter running 100 meters in 10 seconds has a speed of 10 meters per second.
Average speed is calculated by dividing the total distance traveled by the time taken. For instance, if you travel 120 miles in 4 hours, your average speed is 30 miles per hour.
On the other hand, instantaneous speed refers to how fast something is moving at a specific moment.
Imagine a car traveling 65 miles per hour on a highway and then slowing down to 20 miles per hour in traffic. Its instantaneous speed varies depending on the conditions.
Speed is also used to calculate distance and time. To determine distance, multiply the speed by time. For example, driving at 50 miles per hour for 5 hours results in a distance of 250 miles.
To calculate time, divide the distance by speed. Walking 6 miles at a pace of 3 miles per hour takes 2 hours.
