Linear Motion

Linear motion is the movement of an object in a straight line. This type of motion can be described using various concepts such as speed, velocity, and acceleration.

Speed

Speed is a measure of how fast an object is moving. It is calculated as the distance traveled divided by the time taken to travel that distance. The standard unit of speed is meters per second (m/s).

Velocity

Velocity is similar to speed but also includes the direction of motion. It is a vector quantity, which means it has both magnitude and direction. Velocity is calculated as the displacement divided by the time taken. The standard unit of velocity is also meters per second (m/s).

Acceleration

Acceleration is the rate of change of velocity. It can be calculated as the change in velocity divided by the time taken. The standard unit of acceleration is meters per second squared (m/s²).

Study Guide

1. What is linear motion?
2. How is speed calculated?
3. What is the difference between speed and velocity?
4. What is acceleration and how is it calculated?
5. Give an example of an object experiencing linear motion.

Practice problems:

1. An object travels 200 meters in 20 seconds. What is its speed?
2. A car travels 100 meters north in 10 seconds. What is its velocity?
3. If an object's velocity changes from 5 m/s to 10 m/s in 2 seconds, what is its acceleration?

By understanding these concepts and practicing the problems, you can master the topic of linear motion and its related calculations.