A man swims in a 90 meter long pool . He covers 180 meter in one minute by swimming from one end to the other and back along the same straight path.Find the average speed and average velocity.
Answers
Answered by
0
i think 180.........
Manuraj1:
???
How 180 ans please explain
Formula of average speed is total distance/total time and average velocity is initial velocity +final velocity/2
Answered by
3
Here is your solution :
Suppose he started from point A and went to point B again he came back ti point A.
90 m
----------------------------------->
A ___________________B
<-----------------------------------
90 m
1.
Distance covered = 180 meters
Time taken = 1 min = 60 sec
Average speed = Distance covered / Time
=> Average speed = 180 m / 60 s
•°• Average speed = 30m/s
2.
To solve this question , we need to understand displacement.
Displacement = The shortest distance between any two points.
Ex -: Imagine the distance between your house and school is 1 km, in morning you went for school and came back in noon.
Now, you covered the distance 2 km but the displacement is 0 as you came back to the point from where you had started .
Since,the man come back to the same place from where he had started.
So,
Displacement = 0
Initial velocity = 0 ( He has started from rest )
Final velocity = 0 ( He came back to rest )
=> Average velocity = ( Initial velocity + Final velocity) / 2
=> Average velocity = ( 0 + 0 ) 2
=> Average velocity = 0/2 .
•°• Average velocity = 0
Suppose he started from point A and went to point B again he came back ti point A.
90 m
----------------------------------->
A ___________________B
<-----------------------------------
90 m
1.
Distance covered = 180 meters
Time taken = 1 min = 60 sec
Average speed = Distance covered / Time
=> Average speed = 180 m / 60 s
•°• Average speed = 30m/s
2.
To solve this question , we need to understand displacement.
Displacement = The shortest distance between any two points.
Ex -: Imagine the distance between your house and school is 1 km, in morning you went for school and came back in noon.
Now, you covered the distance 2 km but the displacement is 0 as you came back to the point from where you had started .
Since,the man come back to the same place from where he had started.
So,
Displacement = 0
Initial velocity = 0 ( He has started from rest )
Final velocity = 0 ( He came back to rest )
=> Average velocity = ( Initial velocity + Final velocity) / 2
=> Average velocity = ( 0 + 0 ) 2
=> Average velocity = 0/2 .
•°• Average velocity = 0
Similar questions