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Hi everyone.
00:01
We have a question in which we are basically dropping a stone from a building height and which reaches the ground in 2 .5 seconds later.
00:10
So we need to find the height of that building.
00:13
So in the question we have given that a stone is dropped.
00:19
That means stone dropped.
00:22
Since the stone is dropped that means we can say that it is having an initial velocity which is equal to 0.
00:27
Therefore, we can say that initial velocity of this stone which is u is equals to 0 meter per second.
00:37
As well as it is reaching the ground, that means the time taken to reach the ground is also given in the question which is equal to 2 .5 seconds.
00:48
Now since it is moving in a vertical motion, that means we can say that the acceleration here which is a is equal to acceleration due to gravity which is g and let's take we have to take g equal to 9 .8 meter per second square.
01:03
So we need to find the height of that building...