# The force applied against an object moving horizontally on a linear path is described by #F(x)= cospix+3x #. By how much does the object's kinetic energy change as the object moves from # x in [ 1, 2 ]#?

##### 1 Answer

Feb 9, 2016

#### Explanation:

**Work-Energy Theorem**: The total work done by all the forces acting on a body must be equal to the change in its kinetic energy.