Â A work of 4900j is done on road of mass 50 kg to lift it to a certain height. Calculate the height through which the load is lifted. a) 10 b) 20 c) 30 d) none

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Â A work of 4900j is done on road of mass 50 kg to lift it to a certain height. Calculate the height through which the load is lifted. a) 10 b) 20 c) 30 d) none