A man weighing 60 kg is standing on a tr...

A man weighing 60 kg is standing on a trolley weighting 240 kg. The trolley is resting on frictionless horizontal rails. If the man starts walking on the trolley with a velocity of 1 m/s, then after 5s, his displacement relative to the ground is

6 m

4.8 m

3.2 m

2.4 m

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