Chapter 9
Distance and Speed
People have probably always been interested in how long it takes them to get from here to there. Now we travel even more and have better technologies to measure distances and time. The study of distances and time. The study of distance, time, and speed is even more relevant now than in the past.
In this chapter, you will be able to:
- use a variety of technologies to measure the distance travelled in a given amount of time;
- design and conduct experiments to determine average speed;
- create, understand, test, and use an equation involving average speed, distance, and time;
- draw and interpret distance-time graphs for uniform motion;
- describe the difference between constant speed and average speed;
- evaluate technologies used for personal transportation;
- develop an understanding of how physics concepts are created, tested and used.
Chapter 10
Distance, Speed, and Acceleration
You do not always travel at the same speed. To begin moving and get up to speed, you need to accelerate. This chapter investigates the rate of change of speed.
In this chapter, you will be able to:
- use various designs to conduct experiments to measure distance and time to determine average acceleration;
- create, test, and use an equation for calculating acceleration from rate fo change in speed;
- use and compare the definitions, equations, units, and distance-time and speed-time graphs for acceleration;
- formulate scientific questions related to motion;
- research information about motion using a variety of sources.
Chapter 11
Displacement and Velocity
You can travel various routes to reach a destination. Your journey might include changes in direction as you travel along a path with a particular speed. The addition of direction to descriptions of motion is the subject of this chapter.
In this chapter, you will be able to:
- understand and give examples of the differences among distance, displacement and position, and between speed and velocity;
- demonstrates motion with direction using simple graphs;
- add displacement vectors using vector diagrams and algebraic calculations;
- analyze the methods and outline the scientific benefits of technology used to track the motion of objects;
- create, test, and use the equations for average velocity, displacement and time;
- distinguish between constant and average velocity.
Chapter 12
Displacement, Velocity, and Acceleration
Direction is important for all types of motion. In this chapter, you will extend your previous knowledge of motion and direction. Your improved understanding will include a more complete description of the equations, units, and graphs for both constant velocity and constant accelerate.
In this chapter, you will be able to:
- distinguish among constant, instantaneous, and average velocity;
- create and interpret position-time and velocity-time graphs;
- create, test and use an equation involving acceleration, change in velocity, and time;
- use and evaluate previous and new designs to conduct experiments to determine average acceleration, including acceleration due to gravity;
- identify, explain, and express sources or error and uncertainty in an experiment;
- develop and use the equations for average velocity-time graph;
- describe performance-enhancing features of a piece of sports equipment;
- demonstrates an understanding of the history and nature of science.
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