Ask Question
1 September, 07:48

A watermelon is dropped off of a 50 ft bridge, and it explodes upon impact with the ground. How fast was it traveling in mph upon impact?

+3
Answers (1)
  1. 1 September, 08:08
    0
    Answer: 56.72 ft/s

    Explanation:

    Ok, initially we only have potential energy, that is equal to:

    U = m*g*h

    where g is the gravitational acceleration, m the mass and h the height.

    h = 50ft and g = 32.17 ft/s^2

    when the watermelon is near the ground, all the potential energy is transformed into kinetic energy, and the kinetic energy can be written as:

    K = (1/2) * m*v^2

    where v is the velocity.

    Then we have:

    K = U

    m*g*h = (m/2) * v^2

    we solve it for v.

    v = √ (2g*h) = √ (2*32.17*50) ft/s = 56.72 ft/s
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A watermelon is dropped off of a 50 ft bridge, and it explodes upon impact with the ground. How fast was it traveling in mph upon impact? ...” in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers