A person walks at 4 km/h on a moving escalator that moves at 2 km/h. What is the

Practice Questions

Q1
A person walks at 4 km/h on a moving escalator that moves at 2 km/h. What is the speed of the person relative to a stationary observer?
  1. 2 km/h
  2. 4 km/h
  3. 6 km/h
  4. 8 km/h

Questions & Step-by-Step Solutions

A person walks at 4 km/h on a moving escalator that moves at 2 km/h. What is the speed of the person relative to a stationary observer?
  • Step 1: Identify the speed of the person walking on the escalator, which is 4 km/h.
  • Step 2: Identify the speed of the escalator, which is 2 km/h.
  • Step 3: To find the total speed of the person relative to a stationary observer, add the speed of the person and the speed of the escalator together.
  • Step 4: Perform the addition: 4 km/h (person) + 2 km/h (escalator) = 6 km/h.
  • Step 5: The final result is that the speed of the person relative to a stationary observer is 6 km/h.
  • Relative Speed – Understanding how to calculate the speed of an object in relation to another moving object.
  • Vector Addition – Applying the principle of adding speeds in the same direction to find the resultant speed.
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely