(a) 3.6
(b) 7.2
(c) 8.4
(d) 10
Explanation:
Speed = 600/(5 x 60) m/sec.
= 2 m/sec.
Converting m/sec to km/hr (see important formulas section)
= 2 x (18/5) km/hr
= 7.2 km/hr.
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