A horizontal net force F is exerted on an object at rest. The object starts at x= 0 m and has a speed of 4.0 m/s after moving 6.0 m along a horizontal frictionless surface. The net force F as a function of the object's position x is shown below.
what is the mass of the object?
![A horizontal net force F is exerted on an object at rest The object starts at x 0 m and has a speed of 40 ms after moving 60 m along a horizontal frictionless s class=](https://us-static.z-dn.net/files/db7/2fbb11a02fce07163cc6cf16309db5b3.png)