Ask Question
18 November, 08:37

What is the Kinetic energy of a rock with mass of 7 kg being thrown at 25 m/s?

+3
Answers (1)
  1. 18 November, 11:15
    0
    Kinetic energy = (1/2) (mass) (speed) ²

    In order to make the rock move at 25 m/s, you must give it

    (1/2) (7 kg) (25 m/s) ² =

    (3.5 kg) (625 m²/s²) =

    2,187.5 joules of kinetic energy.

    That energy has to come from somewhere.

    If you're trying to give the rock that speed by throwing it,

    then the energy has to come from your throwing muscles.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “What is the Kinetic energy of a rock with mass of 7 kg being thrown at 25 m/s? ...” 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