Lesson eLearning

A force of 5 N acts on a body, moving it 2 m in the direction of the force. What is the work done by the force?

easy 1 mark Class 9 · Science · Work and Energy
Answer
10 J

The correct answer is 10 J — Step 4: Conclude that the work done is .

Step-by-step solution

  1. Step 1: Identify the magnitude of the force, , and the displacement, , both along the same direction.
  2. Step 2: Use the formula for work done by a constant force: .
  3. Step 3: Substitute the values: .
  4. Step 4: Conclude that the work done is .
Common mistake: Treating displacement as a vector and multiplying magnitudes without considering direction

Concept tested: Work done by a constant force

Published · How this solution was prepared and checked

← All Work and Energy questions