00:01
Hello, in the question we have given that alex is running around a circular path with a circumference of 300 meters.
00:09
So we have given a circle, we can say it is a circular track and the circumference.
00:17
So the circumference of this circle is given that is 300 meters.
00:29
Further, he runs two complete rounds.
00:32
So suppose he is starting from this point a.
00:35
So he will complete the first round.
00:37
Meet over here, then complete the second round.
00:40
So in three meters each.
00:44
So the time for one complete round is equals to three minutes.
01:00
We will convert directly into seconds while solving the problem.
01:09
Then he stops midway in 1 .5 minutes.
01:18
So time taken for covering half distance.
01:35
Half distance means half of the circumference.
01:38
So that is given to be equal to 1 .5 minutes.
01:44
So so then if he has started from here, so he completes one round, then second round and for the third round, he completes he only completes half of the round and the time taken is 1 .5.
02:00
Let us call this as point b.
02:03
So what we have to do is we have to find out the average speed and average velocity.
02:08
So let us do that.
02:10
So average speed is given by total distance traveled upon total time taken.
02:35
So average speed, i will abbreviate this average as avg.
02:41
So average speed will be equal to total distance is 300 for the first round for the second round again 300 and for the third round it is 150 because only half of it says it is completed.
02:55
So the total time is for 300 it is 3 minutes for the next 300 it is 3 and for 150 it is 1 .5 but this is in minutes i will multiply by 60.
03:07
So it will give me the answer in seconds.
03:09
So average speed from here turns out to be so this is 600 750...