Rahul swims in a 120 m long swimming pool. He covers 240 m in 1 minute by swimming from one end to the other and back along the same straight path. What is his average velocity?
Answers
Rahul swims in a 120 m long pool. (Length of pool = 120 m). He covers 240m in 1 min (60 sec) by swimming from one end to the other and back along the same straight path.
We have to find the average velocity of Rahul.
Average speed is defined as the total distance covered with respect to total time taken. Whereas average velocity is defined as the ratio of total displacement with respect to the total time taken.
As given in question that, the Rahul covers a distance of 240 m in 60 sec.
(Total distance covered is 240 m and time taken is 60 sec).
Average speed = 240/60 = 4 m/s
Therefore, the average speed of the Rahul is 4 m/s.
Since, he is swimming from one end to the other and back along the same straight path. So, the total displacement of the Rahul is zero.
Therefore, the average velocity of the Rahul is 0 m/s.