Answer :
Answer:
The answer is 1/14 seconds.
Explanation:
To find the time taken by the stone to cross the window, we need to calculate the time it takes for the stone to fall from a height of 90 cm above the top of the window to the ground.
Given:
- Height of the stone above the top of the window = 90 cm
- Height of the window = 160 cm
The total height from which the stone falls is the sum of these two heights:
Total height = 90cm + 160cm = 250cm
Now, we will use the formula for the time t taken for an object to fall a distance h under gravity:
h = 1/2g t^2
Where:
- h is the total height fallen
- g is the acceleration due to
First, convert the height into meters
250cm = 2.5m
The time taken by the stone to cross the window is 1/14seconds.
So, the answer is 1/14 seconds.