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Jalyn asked in Science & MathematicsPhysics · 2 months ago

Zak moves a 46.3kg sofa 7.5 m with a constant force of 21N.What is the average acceleration of the sofa?  Answer in units of m/s 2 .?

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  • Jim
    Lv 7
    2 months ago

    F = ma

    then a= F/m = 21/46.3 = 0.4535637149 m/s²

    Now round to 2 sigfigs since 21N only has 2 digits: 0.45 m/s²

    assumes frictionless floor!

    The 7.5m is unnecessary extra info as would be the temperature in the room!

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  • oubaas
    Lv 7
    2 months ago

    aver. a = F/m = 21/46.3 = 0.454 m/sec^2 (displacement is useless) 

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  • 2 months ago

    BY F = ma

    =>21 = 46.3 x a

    =>a = 0.45 m/s^2

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  • JB
    Lv 4
    2 months ago

    That's just typical Zak..:)

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  • 2 months ago

    acceleration is f/m so divide 21 by 46.3 and you get N/kg units which is the same as m/s^2

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  • Anonymous
    2 months ago

    Is this all the information you are given and not just one of several questions?  I don't see how you can answer it with just this information.

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