- Air (or wind)
- a. stay in place.
- d. moving.
- reference point
- Because they are typically stationary and provide a stable, fixed position against which the motion of other objects can be measured.
- Yes, but it is less reliable. A moving object can be used as a reference point, but since its own position is changing, it makes measuring the motion of other objects more complex and potentially inaccurate compared to using a stationary reference point.
- time
- meters per second (m/s)
- It is useful because most objects do not travel at a constant speed; average speed gives a single value that represents the overall rate of motion over a given distance and time period, making it easier to compare different trips or motions.
Parent Tip: Review the logic above to help your child master the concept of reference point worksheet.
