physics help please

a horizontal force of 8.0 newtons is used to pull a 20.-newton wooden box moving toward the right along a horizantal, wood surface, as shown.

A. Determine the mass of the box.
B. calculate the magnitude of the acceleration of the box.[Show all work, including the equation and substitution with units.]

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  1. 20N weight, so mass must be 20/9.8 kg

    F=ma
    8=mass*a solve for a.

    This ignores friction, which is usually significant.

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    bobpursley
  2. 0.4m/s squared

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