Trains and Boats/Streams Relative Speed The relative speed between two objects is the total travel distance divided by the total travel time taken. It tells...
The relative speed between two objects is the total travel distance divided by the total travel time taken. It tells us how fast they are moving relative to each other.
For example, if a train travels 200 meters in 4 minutes, and a boat travels 100 meters in 3 minutes, the relative speed between them would be 67.78 m/min.
Here's how to calculate the relative speed:
Start with the total travel distance.
Divide it by the total travel time to get the average speed.
Here are some important facts about relative speed:
It is always positive, as it tells us the speed at which the objects are moving relative to each other.
It is independent of the direction of motion.
It is equal to the speed of the slower object if both objects are moving at the same speed.
It is slower than the speed of the faster object if both objects are moving at different speeds.
Examples:
If a train travels 200 meters in 4 minutes at an average speed of 50 m/min, its relative speed would be 62.5 m/min.
If a boat travels 100 meters in 3 minutes at an average speed of 33.33 m/min, its relative speed would be 110 m/min.
If a train and a boat are moving towards each other at 20 m/min, their relative speed would be 40 m/min.
In conclusion, relative speed tells us how fast two objects are moving relative to each other, regardless of the direction of motion