Lesson 5

Are You Ready?

Complete the following questions. If you experience difficulty and need help, visit Refresher or contact your teacher.

1. The distance (d) that has been travelled at speed s over time t is given by d = st. Use this relation to evaluate the following scenarios.
   
   
   1. the distance travelled by a car with speed 90 km/h after 2.5 h Answer
      
      
   2. the speed of a motorcycle if it travels 500 km in 4 h Answer
      
      
   3. the time it takes for a man to walk 12 km at a speed of 5 km/h Answer
      
      
2. Simplify the following expressions.
   
   
   1. Answer
      
      
   2. Answer

How did the questions go? If you feel comfortable with the concepts covered in the questions, skip forward to Discover. If you experienced difficulties, use the resources in Refresher to review these important concepts before continuing through the lesson.