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- A student pushes a box 32M across a smooth horizontal floor using a constant force of 109N. if the force was applied for 5s. how much power was developed to the nearest watt?A student pushed a box 27.0 m across a smooth, horizontal floor using a constant force of 140 Newtons. If the force was applied for 9 seconds, how much power was developed to the nearest watt?. Calculate the work done by a force of 70 N in lifting a load of Skg to a height of 10m (g = 10ms™2)