The work done by the force on the object is 80 J.
The work is defined by the product of force and displacement. Its unit of measurement is joule. And the formula is,
Work = Force ×Displacement
Or mathematically it is W = F.d
[tex]F = 20N , d = 4m\\[/tex]
W = 20 × 4
W = 80 J
Hence the work done by the force is 80J.
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