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There is no time of moving of the wall.
Cathy Erwin asked the Naked Scientists: Hi,My son in grade 9 has just asked me to help him with an exam question, for his Physical Science exam, which is TOMORROW!!!A 75kg man pushes against a 500 000 ton wall for 250 seconds. The wall does not move. How much work is done?He says the equation is Work = force x distanceIf distance is 0 then surely the answer is 0?Please help.Thanks and kind regards,CathyWhat do you think?