Answer :
Answer:
122.5 m
Explanation:
Given:
Time taken by apple to reach ground (t) = 5 s
Acceleration of the apple is due to gravity (g) = 9.8 m/s²
The displacement of the apple is equal to the height of window (h) = ?
As the apple is dropped, the initial velocity is, [tex]u=0\ m/s[/tex]
Now, using Newton's equation of motion along the vertical direction that relates displacement, initial velocity, acceleration and time taken, we have:
[tex]h=ut+\frac{1}{2}gt^2[/tex]
Plug in the given values and solve for 'h'. This gives,
[tex]h=0+\frac{1}{2}\times 9.8\times 5^2\\\\h=4.9\times 25=122.5\ m[/tex]
Therefore, the height of the window above the ground is 122.5 m.