Question

How much work would it take to horizontally accelerate an object with a mass of `8 kg` to `7 m/s` on a surface with a kinetic friction coefficient of `2`?

Answer 1

Wrong question ..?

Explanation:

For the body to be accelerated to 7`ms^(-1)`
we know , work don't in doing so is equal to
W=`F*dS=1/2M(v_f^2-v_i^2)`

This can be altered due the presence of friction force.
`(F_(applied)-K_f*N)*dS=1/2M(v_f^2-v_i^2)`

To solve this question we have to get at least 1 variables , But here we have got 2 , provided the information is insufficient.