# How much work would it take to horizontally accelerate an object with a mass of #3 kg# to #7 m/s# on a surface with a kinetic friction coefficient of #3 #?

##### 1 Answer

#### Explanation:

If you ask how much '**net' ** work is done, then the answer is

However, if you ask how much work is needed to overcome the friction to achieve

Therefore,

The workdone by the applied force therefore does two things: to overcome the frictional work and to change the kinetic energy of the object.

However, neither x nor time t to reach