# How much work would it take to horizontally accelerate an object with a mass of #4# #kg# to #3# #ms^-1# on a surface with a kinetic friction coefficient of #6#?

##### 1 Answer

Jun 14, 2017

The weight force of a

The frictional force will be given by:

Work will be done doing two things: overcoming friction and increasing the kinetic energy of the object. Let's take the kinetic energy first:

Now the work done in overcoming the friction will be given by:

We don't know the distance it takes to accelerate the object from rest to

And I'm stuck here. If we assume something we may be able to get it, but I'll have to leave that to some of my smarter colleagues.