Question

1. which of the following is used to measure speed?

meters
seconds
meters per seconds
seconds per meters

Explanation:

Speed is defined as the distance traveled per unit of time. The formula for speed is \( \text{speed} = \frac{\text{distance}}{\text{time}} \). Distance is often measured in meters, and time in seconds, so the unit for speed is meters per second (meters divided by seconds).

• "meters" is a unit of distance, not speed.
• "seconds" is a unit of time, not speed.
• "seconds per meters" would be a unit of something inverse to speed (like time per distance), not speed.
• "meters per seconds" (correctly "meters per second") is the unit for speed as it represents distance over time.

Answer:

The option with "meters per seconds" (correctly "meters per second")