Ask Question
12 April, 12:57

A stone is dropped from the roof of a tall building. A person measures the speed of the stone to be 49 m/sec when it hits the ground. The height of the building is closest to:

Select one:

a. 24 meters.

b. 49 meters.

c. 122 meters.

d. 245 meters.

+2
Answers (1)
  1. 12 April, 13:15
    0
    V^2 = u^2 + 2gh

    since the stone is dropped, the initial speed is 0.

    v^2 = 2gh

    49^2 = 2 x 9.8 x h

    h = 2401 / 19.6 = 122.5 meters

    The height of the building is closest to 122 meters.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A stone is dropped from the roof of a tall building. A person measures the speed of the stone to be 49 m/sec when it hits the ground. The ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers