Introduction

Do you enjoy the thrill of a roller coaster ride as the motion of the car changes quickly and drastically?



C7.1 downhill mountain bike rider
When sitting in a car that is in travelling at a constant speed – uniform motion – it can at times feel like you are not even moving. But, you can definitely feel when there is a change in the car’s motion when you brake, or speed up, or slow down. This change in velocity over a period of time is what you will learn about in this lesson. You will also continue to work with graphs and interpreting an object’s motion from a graph.

  Targets

By the end of this lesson, you will be able to

  • define, compare, and contrast scalar and vector quantities
  • define acceleration, through calculations, as a change in velocity during a time interval: «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mover»«mi»a«/mi»«moȤ#8594;«/mo»«/mover»«mo»=«/mo»«mfrac»«mrow»«moȤ#8710;«/mo»«mover»«mi»v«/mi»«moȤ#8594;«/mo»«/mover»«/mrow»«mrow»«moȤ#8710;«/mo»«mi»t«/mi»«/mrow»«/mfrac»«/math»
  • investigate scalar motion and work done on an object, using calculations and acceleration-time and speed-time graphs

  Watch This

Physics – Uniform Motion and Non-uniform Motion © YouTube Don’t Memorise  


This video provides you with a great overview of the difference between uniform motion and non-uniform motion. It reviews uniform motion, which you learned about in the previous lessons of this section, and then introduces the concept of non-uniform motion. This will help get you in the right mindset for this lesson.