Ram swims in a pool that is 72 m long. He swims from one end to the other and back, covering 144 m in one minute. Find his average speed.
- 2.04 ms⁻¹
- 2.4 ms⁻¹
- 2.60 ms⁻¹
- 3.67 ms⁻¹
Show answer and solution
Correct answer: B. 2.4 ms⁻¹
1. Total distance covered = 144 m.
2. Total time = 1 minute = 60 s.
3. Average speed = distance / time = 144 / 60 = 2.4 ms⁻¹.
_Source: RRB Group D CEN-02/2018 PYQ, Q.2._