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Success Criteria:
I can define work and its unit of measurement (Joules).
I can calculate work done using the formula W=F×d
I can calculate work done when force is applied at an angle using the formula W=F×d×cos(θ)
Fun Fact
When you go downhill on a bike or a roller coaster, gravity is doing the work for you! As you descend, potential energy is converted into kinetic energy, making you go faster without extra effort. That's why those thrilling drops feel so exhilarating!
Key terms
Work: The transfer of energy that occurs when a force is applied to an object, causing it to move. It is calculated using the formula W=F×d and is measured in Joules (J).
Force (F): A push or pull acting on an object, measured in Newtons (N). Force is a vector quantity, meaning it has both magnitude and direction.
Displacement (d): The distance moved in a specific direction from an initial position to a final position. It is also a vector quantity.
Joule (J): The unit of measurement for work and energy in the International System of Units (SI). One Joule is defined as the work done when a force of one Newton moves an object one meter in the direction of the force.
Force-Displacement Graph: A graphical representation showing the relationship between force applied to an object and its displacement. The area under the curve of this graph represents the work done.
Area Under the Curve: In a force-displacement graph, the total area under the curve indicates the total work done. Different shapes (rectangles, triangles) can be used to calculate this area.
Learning Tasks
Chapter 13.1 Key Knowledge Questions p.406 of Textbook
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