Quick practice
Question 1 of 3
A man weighing 80 kg is standing in a trolley weighing 320 kg. The trolley is resting on frictionless horizontal rails. If the man starts walking on the trolley with a speed of 1 m/s, then after 4 sec, his displacement relative to the ground will be
A
3.0 m
B
4.8 m
C
5 m
D
3.2 m
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