A person is running at a speed of 10 m/s. If he is running towards a train moving at 20 m/s in the opposite direction, what is the relative speed of the train with respect to the person?
Practice Questions
1 question
Q1
A person is running at a speed of 10 m/s. If he is running towards a train moving at 20 m/s in the opposite direction, what is the relative speed of the train with respect to the person?
10 m/s
20 m/s
30 m/s
40 m/s
Relative speed = speed of train + speed of person = 20 + 10 = 30 m/s.
Questions & Step-by-step Solutions
1 item
Q
Q: A person is running at a speed of 10 m/s. If he is running towards a train moving at 20 m/s in the opposite direction, what is the relative speed of the train with respect to the person?
Solution: Relative speed = speed of train + speed of person = 20 + 10 = 30 m/s.
Steps: 6
Step 1: Identify the speed of the person running. In this case, the person is running at 10 m/s.
Step 2: Identify the speed of the train. The train is moving at 20 m/s.
Step 3: Determine the direction of both the person and the train. The person is running towards the train, which means they are moving in opposite directions.
Step 4: To find the relative speed, add the speed of the person to the speed of the train because they are moving towards each other.
Step 5: Calculate the relative speed: 20 m/s (train) + 10 m/s (person) = 30 m/s.
Step 6: The relative speed of the train with respect to the person is 30 m/s.
