A runner completes a 400 m lap in 50 seconds. What is the runner's average veloc
Practice Questions
Q1
A runner completes a 400 m lap in 50 seconds. What is the runner's average velocity?
8 m/s
6 m/s
4 m/s
2 m/s
Questions & Step-by-Step Solutions
A runner completes a 400 m lap in 50 seconds. What is the runner's average velocity?
Step 1: Understand that average velocity is calculated using the formula: average velocity = total displacement / total time.
Step 2: Identify the total displacement. Displacement is the straight-line distance from the starting point to the ending point. Since the runner completes a lap and returns to the starting point, the displacement is 0 meters.
Step 3: Identify the total time taken. The runner takes 50 seconds to complete the lap.
Step 4: Plug the values into the formula: average velocity = 0 meters / 50 seconds.
Step 5: Calculate the average velocity. Since the displacement is 0, the average velocity is 0 m/s.
Average Velocity – Average velocity is defined as the total displacement divided by the total time taken. Displacement considers the shortest distance from the initial to the final position.
Displacement vs Distance – Displacement is a vector quantity that refers to the change in position, while distance is a scalar quantity that refers to the total path length traveled.
