Ask Question
31 March, 15:11

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

+3
Answers (1)
  1. 31 March, 15:52
    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?
Get 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 & Technology if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers