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Physics 9 Online
OpenStudy (anonymous):

A horizontal force of 8.0 newtons is used to pull a 20.-newton wooden box on a friction less surface.Calculate the magnitude of the acceleration of the box.

OpenStudy (mrnood):

the "20N" box refers to its WEIGHT BUT this question refers to horizontal acceleratikon - so weight is not relevant. Weight = mass * g so you need to work out the MASS of the box in kg Then use Force = Mass * Acceleration, for the horizontal movement

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