# The magnitude of a certain one-dimensional force v…

### Question Description:

The magnitude of a certain one-dimensional force varies according to: F = 8.03x – 0.955×3 where x is the displacement from the origin in meters, and F is the magnitude of the force in Newtons. At t = 0, a mass m = 969 g is at the origin moving in the positive x-direction at speed v = 7.9 m/s when this force begins to act on it. ASSUME: there are no other forces acting on the mass. a) Find the work done by the force on the mass when it reaches x = 2.91 m? J b) Find v, the speed of the mass when it reaches x = 2.91 m? m/s