1. Choose a reference point: This is a fixed location that you can use to compare the object's position. It could be a wall, a tree, a building, or even another object that is considered stationary.
2. Observe the object's position: Compare the object's position to the reference point at different times.
3. Look for a change in position:
* If the object's position changes relative to the reference point, then it is in motion.
* If the object's position remains the same relative to the reference point, then it is at rest (not in motion).
Example:
Imagine you're sitting on a train.
* Relative to the train: You are at rest, because your position relative to the seats and walls of the train doesn't change.
* Relative to the ground: You are in motion, because you are traveling with the train, and your position relative to the trees and buildings outside is constantly changing.
Key Points:
* Motion is relative: Whether an object is in motion or at rest depends on the chosen reference point.
* Motion can be straight or curved: An object can move in a straight line or follow a curved path.
* Motion can be fast or slow: The speed of an object refers to how quickly it changes its position.
In summary, to determine if an object is in motion, you need to:
* Choose a reference point.
* Observe the object's position relative to the reference point.
* Check if there is a change in the object's position over time.
