MDCAT Physics MCQ #1830

Water speed in a pipe increases from 2 m/s to 4 m/s. What is the change in kinetic energy per unit volume of the water?

MDCAT Physics MCQ #1830

  1. Question 1

    Q1. Water speed in a pipe increases from 2 m/s to 4 m/s. What is the change in kinetic energy per unit volume of the water?

    • A) 3000 J/m³
    • B) 6000 J/m³
    • C) 12000 J/m³
    • D) 8000 J/m³

    Answer: 6000 J/m³

    Explanation: The change in kinetic energy per unit volume is 0.5 * ρ * (v2² - v1²). Here, 0.5 * 1000 * (16 - 4) = 500 * 12 = 6000 J/m³.