A runner completes a 400 m lap in 50 seconds. What is his average velocity?

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

Options:

Correct Answer: 6 m/s

Solution:

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

A runner completes a 400 m lap in 50 seconds. What is his average velocity?

A runner completes a 400 m lap in 50 seconds. What is his average velocity?

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 velocity, which is average velocity = total distance / total time.
Step 4: Plug in the values: average velocity = 400 meters / 50 seconds.
Step 5: Calculate the average velocity: 400 divided by 50 equals 8.
Step 6: State the average velocity: The average velocity of the runner is 8 meters per second.

Average Velocity – Average velocity is defined as the total displacement divided by the total time taken.
Distance vs. Displacement – Understanding the difference between distance (total path length) and displacement (straight-line distance from start to finish) is crucial.
Units of Measurement – Recognizing and correctly using units of measurement (meters, seconds) is essential for calculating velocity.