You start walking from a point on a circular field of radius 0.5 km and 1 hour later you are at the same point.what is your average speed and velocity for the whlole family?
Answers
Answer :
Given :
Radius of the circular field = 0.5 km
Time taken = 1 hour
Required to find :
- Average speed
- Average Velocity
Solution :
In the question it is given that you had started walking from a point on the circular field of radius 0.5 km and 1 hour later you are at the same point .
He asked us to find the average speed and average velocity.
To solve this problem first we need to find the length of the circular field .
However,
Length of the circular field = perimeter of the circular field.
So, using the formula
perimeter of the circle = 2∏r
Hence , using the above formula let's find the length of the circular field.
Therefore,
Length of the circular field = 2 ∏ r
=> 2 × 3.14 × 0.5
=> 3.14 km
Hence the length of the circular field is 3.14 km .
What is Average speed ?
The total distance travelled by total time taken will give us the average speed .
The S.I. unit of average speed is Km/hr .
Therefore,
Total distance is 3.14 km
Total time taken is 1 hr
Hence ,
Average speed = Total distance/Total time taken
Average speed = 3.14 km / 1 hr
= 3.14 km/hr .
What is Average Velocity ?
The ratio of total displacement by total time taken will give us the average velocity.
The S.I. unit of average velocity is Km/hr .
Therefore,
Total displacement = 0 kilometres
( This is because the object again came back to it's initial position )
Time taken = 1 hr
Average velocity = Total displacement/ Total time taken
So,
Average velocity = 0 km / 1 hr
= 0 km/hr
Hence ,
Average Velocity = 0 km/hr .
Answer:
Answer :
Given :
Radius of the circular field = 0.5 km
Time taken = 1 hour
Required to find :
Average speed
Average Velocity
Solution :
In the question it is given that you had started walking from a point on the circular field of radius 0.5 km and 1 hour later you are at the same point .
He asked us to find the average speed and average velocity.
To solve this problem first we need to find the length of the circular field .
However,
Length of the circular field = perimeter of the circular field.
So, using the formula
perimeter of the circle = 2∏r
Hence , using the above formula let's find the length of the circular field.
Therefore,
Length of the circular field = 2 ∏ r
=> 2 × 3.14 × 0.5
=> 3.14 km
Hence the length of the circular field is 3.14 km .
\rule{400}{4}
What is Average speed ?
The total distance travelled by total time taken will give us the average speed .
The S.I. unit of average speed is Km/hr .
Therefore,
Total distance is 3.14 km
Total time taken is 1 hr
Hence ,
Average speed = Total distance/Total time taken
Average speed = 3.14 km / 1 hr
= 3.14 km/hr .
\rule{400}{4}
What is Average Velocity ?
The ratio of total displacement by total time taken will give us the average velocity.
The S.I. unit of average velocity is Km/hr .
Therefore,
Total displacement = 0 kilometres
( This is because the object again came back to it's initial position )
Time taken = 1 hr
Average velocity = Total displacement/ Total time taken
So,
Average velocity = 0 km / 1 hr
= 0 km/hr
Hence ,
Average Velocity = 0 km/hr .
\rule{400}{4}