A stone falls freely under gravity it covers distances h1,h2 and h3 in...
Relation between h1, h2, and h3 when a stone falls freely under gravity for 15 seconds:Explanation:
When a stone falls freely under gravity, its motion is described by the equations of motion. The distance it covers in any given time depends on its initial velocity, which is zero when it is dropped from rest. The distance covered in the first 5 seconds is given by the equation:
h1 = (1/2)gt^2
where g is the acceleration due to gravity and t is the time taken. Substituting g = 9.8 m/s^2 and t = 5 s, we get:
h1 = (1/2)(9.8)(5)^2 = 122.5 m
Similarly, the distance covered in the next 5 seconds is given by:
h2 = h1 + (1/2)gt^2
Substituting g = 9.8 m/s^2 and t = 5 s, we get:
h2 = 122.5 + (1/2)(9.8)(5)^2 = 247.5 m
Finally, the distance covered in the last 5 seconds is given by:
h3 = h2 + (1/2)gt^2
Substituting g = 9.8 m/s^2 and t = 5 s, we get:
h3 = 247.5 + (1/2)(9.8)(5)^2 = 372.5 m
Therefore, the relation between h1, h2, and h3 is:
h3 = h2 + h1
Conclusion:In conclusion, the distance covered by a stone falling freely under gravity depends on the time taken and the acceleration due to gravity. The relation between the distances covered in the first, second, and third 5-second intervals is given by h3 = h2 + h1.