A cyclist is moving at 15 m/s and a pedestrian is walking at 5 m/s in the same d
Practice Questions
Q1
A cyclist is moving at 15 m/s and a pedestrian is walking at 5 m/s in the same direction. What is the relative speed of the pedestrian with respect to the cyclist?
10 m/s
5 m/s
20 m/s
15 m/s
Questions & Step-by-Step Solutions
A cyclist is moving at 15 m/s and a pedestrian is walking at 5 m/s in the same direction. What is the relative speed of the pedestrian with respect to the cyclist?
Correct Answer: 10 m/s behind
Step 1: Identify the speed of the cyclist, which is 15 m/s.
Step 2: Identify the speed of the pedestrian, which is 5 m/s.
Step 3: Since both the cyclist and pedestrian are moving in the same direction, we will subtract the speed of the cyclist from the speed of the pedestrian.
Step 4: Calculate the relative speed: 5 m/s (pedestrian) - 15 m/s (cyclist) = -10 m/s.
Step 5: The negative sign indicates that the pedestrian is behind the cyclist.
Relative Speed – The speed of one object as observed from another object, calculated by subtracting their speeds when moving in the same direction.
