everyday science MCQ #2060

Friction can be reduced by changing from:

everyday science MCQ #2060

  1. Question 1

    Q1. Friction can be reduced by changing from:

    • A) Sliding to rolling
    • B) Rolling to sliding
    • C) Potential energy to kinetic energy
    • D) Dynamic to static

    Answer: Sliding to rolling

    Explanation: Rolling friction is much less than sliding friction because rolling objects have minimal contact area with the surface; replacing sliding with rolling (as in ball bearings) significantly reduces friction.