Ask Question
6 August, 13:13

Item 19 A student pushes a box across a rough horizontal floor. If the amount of work done by the student on the box is 100 J and the amount of energy dissipated by friction is 40 J, what is the change in kinetic energy of the box

+2
Answers (1)
  1. 6 August, 14:02
    0
    60 J

    Explanation:

    Given,

    Work done to push the box = 100 J

    Energy dissipated by friction = 40 J.

    According to work energy theorem work done is equal to change in kinetic energy.

    Change in Kinetic energy = Work done by student + Work done by friction

    Change in Kinetic energy = 100 J - 40 J

    Work done by the friction will be negative because it will act in opposite direction of force applied.

    Change in Kinetic energy = 60 J
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Item 19 A student pushes a box across a rough horizontal floor. If the amount of work done by the student on the box is 100 J and the ...” in 📘 Computers and Technology if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers