Motion

* Definition: Motion is the change in position of an object over time. In simple terms, it means something is moving.

* Key Ideas:

* Reference Point: To determine if something is in motion, we need a reference point. For example, a car moving down the street is in motion relative to the road, but it's not in motion relative to someone inside the car.

* Direction: Motion has direction. A car moving north is in a different motion than a car moving south.

* Distance: Motion involves covering a certain distance.

* Time: Motion takes place over a period of time.

Speed

* Definition: Speed is a measure of how fast an object is moving. It tells us how quickly an object changes its position.

* Key Ideas:

* Rate: Speed is a rate of change. It's calculated by dividing the distance traveled by the time it takes to travel that distance.

* Formula: Speed = Distance / Time

* Units: Speed is typically measured in units like miles per hour (mph), kilometers per hour (km/h), or meters per second (m/s).

In Summary

* Motion is the act of moving, involving a change in position over time.

* Speed tells us how quickly something is moving during that motion.

Examples:

* Motion: A bird flying in the sky.

* Speed: The bird is flying at a speed of 20 miles per hour.

Let me know if you'd like more details or have other questions!