Ask Question
25 November, 16:02

A 2000-lb car drives from Denver (altitude: 5280 feet) to Los Angeles (sea level). What is its change in potential energy, in BTU? g = 32.174 ft/s² Provide your answer rounded to one decimal place, and make sure to include units. *

2) The velocity of an object increases by 50% (V₂=1.5 V₁). By what factor does the kinetic energy increase? *

1

4

1.5

2.25

+3
Answers (1)
  1. 25 November, 18:11
    0
    Loss of potential energy

    = mgh

    = 2000 x 5280 x 32.174

    = 339757440 ft-poundal

    1 BTU = 25036.86 ft-poundal

    Loss of PE in BTU

    = 339757440 / 25036.86

    = 13570.3 BTU.

    2) E = 1/2 m V²

    When V increases to 1.5 V

    E₁ = 1/2 m (1.5V) ²

    = 2.25 X 1/2 m V²

    = 2.25 X E.

    Kinetic energy increases by a factor of 2.25.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “A 2000-lb car drives from Denver (altitude: 5280 feet) to Los Angeles (sea level). What is its change in potential energy, in BTU? g = ...” in 📘 Physics 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