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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.
A2.04 ms⁻¹
B2.4 ms⁻¹
C2.60 ms⁻¹
D3.67 ms⁻¹
Answer & 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._