Question

A variable force F acts on a body of mass, m = 2.0 kg initially at rest, moving it along a straight horizontal surface. For the first 2.0 m, the force is constant at 4.0 N. In the next 2.0 m, it is constant at 8.0 N. In the next 2.0 N, it drops from 8.0 N to 2.0 N uniformly. It then increases uniformly from 2.0 N to 6.0 N in the next 2.0 m. It then remains constant at 6.0 N for the next 4.0 m.

A) Find the work done by this force
B) What is the final speed of the mass?

Answer 1

Answer:

work done by the force is 66J

final speed of the mass is

$\sqrt{66}$ms-1