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 #?

1 Answer
Apr 29, 2017

Answer:

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.