2-2-speed-and-velocity_summary

In the section "2.2 Speed and Velocity," students will learn about speed and velocity, two concepts related to motion. Speed is a scalar quantity that describes how fast or slow an object moves and is calculated as the distance traveled divided by the time during which the motion occurs. The SI unit of speed is meters per second (m/s), but other units like kilometers per hour (km/h) or miles per hour (mph) may also be used. Velocity, on the other hand, is a vector quantity that describes both the speed and direction of an object. It is calculated as displacement divided by the time over which the displacement occurs. The SI unit of velocity is also meters per second (m/s), but it includes a direction. Students will learn how to calculate average speed and average velocity, as well as the difference between the two. They will also learn about instantaneous speed, which is the speed at a specific instant in time, and how to calculate it using the car's speedometer. The section includes examples, worked examples, practice problems, and a video to help students understand the concepts. It is expected that students will be able to describe and analyze motion in one dimension using equations with the concepts of distance, displacement, speed, average velocity, instantaneous velocity, and acceleration.