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A man weighing 80 kg is standing on a trolley weighing 320 kg. The trolley is resting on frictionless horizontal rails. If the man starts walking on the trolley along the rails at speed 1 m/s, then after 4s his displacement relative to the ground will be :
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Correct option is C
Man travels in 4sec, 4 x 1 = 4 mTrolley moves back word = 4×8080+320=320400=0.8mNet displacement w.r.t ground. 4 – 0.8 = 3.2 mTalk to our academic expert!
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