In this lesson, we will learn:
- How to solve relative velocity problems in one dimension
- How to solve relative velocity problems in two dimensions
- Frame of reference can be thought of as the point of view that measurements are made from.
- A relative velocity is a velocity that is measured in a frame of reference. Usually, a moving object is the frame of reference.
- Imagine you are on a train leaving a station at 10 m/s [E]. A bystander at the station would see the train move at 10 m/s [E]: this is the velocity of the train relative to the station ( ). The frame of reference is the station, since that is what the velocity is measured from.
- If you imagine yourself looking out the window of the train it might appear that the station is moving 10 m/s [W], even though you know that it is the train that is moving. This is the velocity of the station relative to the train ( ) and the frame of reference is the train.