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A runner completes a 400 m lap in 50 seconds. What is the average velocity of th

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

Options:

  1. 8 m/s
  2. 6 m/s
  3. 4 m/s
  4. 2 m/s

Correct Answer: 6 m/s

Solution: 

Average velocity = total displacement / total time. Since the runner returns to the starting point, displacement = 0. Average velocity = 0 m / 50 s = 0 m/s.

A runner completes a 400 m lap in 50 seconds. What is the average velocity of th

Practice Questions

Q1
A runner completes a 400 m lap in 50 seconds. What is the average velocity of the runner?
  1. 8 m/s
  2. 6 m/s
  3. 4 m/s
  4. 2 m/s

Questions & Step-by-Step Solutions

A runner completes a 400 m lap in 50 seconds. What is the average velocity of the runner?
Correct Answer: 0 m/s
  • Step 1: Understand that average velocity is calculated using the formula: average velocity = total displacement / total time.
  • Step 2: Identify the total displacement. Since the runner completes a lap and returns to the starting point, the total displacement is 0 meters.
  • Step 3: Identify the total time taken by the runner, which is given as 50 seconds.
  • Step 4: Plug the values into the formula: average velocity = 0 meters / 50 seconds.
  • Step 5: Calculate the average velocity, which equals 0 m/s.
  • Average Velocity – Average velocity is defined as the total displacement divided by the total time taken. Displacement considers the initial and final positions of the object.
  • Displacement vs Distance – Displacement is the shortest distance from the initial to the final position, while distance is the total path traveled.
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