Ask Question
7 July, 12:20

A hot-air balloon is ascending at the rate of 14 m/s and is 84 m above the ground when a package is dropped over the side. (a) How long does the package take to reach the ground? (b) With what speed does it hit the ground?

+4
Answers (1)
  1. 7 July, 12:38
    0
    a) t = 4.14 s

    b) Speed with which it hits the ground = 40.58 m/s

    Explanation:

    Using the equations of motion,

    g = 9.8 m/s², y = H = 84 m,

    Initial velocity, u = 0 m/s,

    final velocity, v = ?

    Total Time of fall, t = ?

    a) y = ut + gt²/2

    84 = 0 + 9.8t²/2

    4.9t² = 84

    t² = 84/4.9

    t = 4.14 s

    b) v = u + gt

    v = 0 + (9.8 * 4.14)

    v = 40.58 m/s
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A hot-air balloon is ascending at the rate of 14 m/s and is 84 m above the ground when a package is dropped over the side. (a) How long ...” 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