Gud morning..
hru all??
A stone is dropped from the roof of a building . It takes 4 seconds to reach the ground . Find the height of the building . (Take g = 9.8 m/s^2)
hru all??
A stone is dropped from the roof of a building . It takes 4 seconds to reach the ground . Find the height of the building . (Take g = 9.8 m/s^2)
Add an Answer
More Questions From This User See All
Answers & Comments
Answer:
24.5
Step-by-step explanation:
Plz MaRk me as BrAiNliSt
Verified answer
Given:
Time to reach the ground, [tex]t = 4s[/tex]
Initial Velocity, [tex]u = 0[/tex] [stationary before dropped]
Acceleration, [tex]a = g = 9.8 \, ms^{-1}[/tex]
To find:
Height of the building, [tex]s[/tex]
Using the second equation of motion,
[tex]s = ut \, + (1/2)at^{2}\\\\\implies s = 0\, + (1/2)(9.8)(4)^{2}\\\implies s = (9.8)(8)\\\implies \bf \underline {s = 78.4 \, m}[/tex]
Hope this helps! Please mark as brainliest!