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A shopkeeper uses a force of 50N to lift a box to a shelf 1.5m high. How much work is done?
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A shopkeeper uses a force of 50N to lift a box to a shelf 1.5m high. How much work is done?

User Debbee
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A shopkeeper uses a force of 50N to lift a box to a shelf 1.5m high. How much work is done?
User LightCZ
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