Physics: Energy Resources And Energy Transfers: Units
Overview
Energy calculations span work, power, kinetic energy, gravitational potential energy and efficiency. Each formula needs its quantities in the correct SI units. Getting mass in grams instead of kilograms or height in centimetres instead of metres will make every answer wrong.
This reference covers the eight SI units for the energy resources and energy transfers section: kilogram, joule, metre, metre per second, metre per second squared, newton, second and watt.
Objectives
- Use the following units: kilogram (kg), joule (J), metre (m), metre/second (m/s), metre/second2 (m/s2), newton (N), second (s) and watt (W)
Lesson Note
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Lesson Evaluation
Congratulations on completing the lesson on Physics: Energy Resources And Energy Transfers: Units. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- The SI unit of energy is: A) Watt B) Newton C) Joule D) Kilogram Answer: C
- What is 4.5 kW in watts? A) 45 W B) 450 W C) 4500 W D) 45000 W Answer: C
- Power is defined as: A) Force x distance B) Energy transferred per unit time C) Mass x velocity D) Energy x time Answer: B
- One joule is the work done when: A) 1 kg moves 1 m B) A 1 N force moves an object 1 m C) 1 W is applied for 1 minute D) 1 kg accelerates at 1 m/s2 Answer: B
- How many joules in 2.5 kJ? A) 25 J B) 250 J C) 2500 J D) 25000 J Answer: C
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Practice Mock Questions
Want to practice mock questions on Physics: Energy Resources And Energy Transfers: Units? Download the Green Bridge CBT app to access mock questions and full practice assessments for this topic.
Download The App On Google Playstore
Everything you need to excel in your exams
