Respuesta :

felixkings

Answer:

[tex]w = \underline{{ \boxed{400 \: J }}} [/tex]

Explanation:

[tex]work \: done = \boxed{force \times distance} \\ w = 80 \times (4 + 1) = 80 \times 5 \\ w = \underline{{ \boxed{400 \: J }}} [/tex]