Recent Lessons

Show all results for ""

Feature Overview

Ace your exams with our all-in-one platform for creating and sharing quizzes and tests.

Free Tools

Explore our collection of AI-powered tools designed to boost your productivity.

Flashcards

Automatically turn your notes into digital flashcards.

Share, Export & Embed

Share with classmates or export to Excel and your learning management system.

Stats & Reporting

Auto-grading quizzes and tests with detailed stats and reports.

Mobile Apps

The smarter way to study – wherever you are.

Pricing Schools Business

Features Free Tools Pricing Schools Business

8 Questions

3 Views

Work, Power, and Energy Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following statements about power is correct?

Power has the unit of joules
Power and energy are the same thing
Power is the rate of doing work or transferring energy (correct)
Power is independent of time

What is the unit of work?

Pascal
Watt
Newton
Joule (correct)

Which of the following is a scalar quantity?

Acceleration
Velocity
Force
Work (correct)

When is kinetic energy of an object the highest?

In free fall (A) Signup and view all the answers

Which of the following formulas correctly calculates the work done by a constant force on an object?

$W = Fd \cos \theta$ (D) Signup and view all the answers

In the context of work, power, and energy, which of the following statements about potential energy is accurate?

Potential energy is always positive and never zero. (D) Signup and view all the answers

Which of the following factors can affect the kinetic energy of an object?

The object's mass and speed (C) Signup and view all the answers

When a force is exerted on an object but does not result in any displacement, the work done by this force is:

Zero (A) Signup and view all the answers