Question Detail

PHY 101 Work, Energy and Power Objective Question
Take CBT

Question

When is work done by a force considered positive?
Options
A When 180° > θ > 90°.
B When 90° > θ > 0°.
Correct Answer
C When θ = 90°.
D When θ = 180°.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Work is positive when the angle θ between the force and displacement is between 0° and 90°, meaning the force has a component in the direction of the displacement.

Hint

Positive work increases the object's kinetic energy.

Question Info

Course: PHY 101
Topic: Work, Energy and Power
Type: Objective
Difficulty: Not specified
Question 384 of 1250
Previous Course Details Next