A runner completes a 400 m lap in 50 seconds. What is their average speed?

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Question: A runner completes a 400 m lap in 50 seconds. What is their average speed?

Options:

Correct Answer: 8 m/s

Solution:

Average speed = total distance / total time = 400 m / 50 s = 8 m/s.

A runner completes a 400 m lap in 50 seconds. What is their average speed?

A runner completes a 400 m lap in 50 seconds. What is their average speed?

Step 1: Identify the total distance the runner completed, which is 400 meters.
Step 2: Identify the total time it took the runner to complete the lap, which is 50 seconds.
Step 3: Use the formula for average speed, which is average speed = total distance / total time.
Step 4: Plug in the values: average speed = 400 meters / 50 seconds.
Step 5: Calculate the average speed: 400 divided by 50 equals 8.
Step 6: State the average speed: The average speed of the runner is 8 meters per second (m/s).

Average Speed – Average speed is calculated by dividing the total distance traveled by the total time taken.