Question

The graph below shows how the force on a mass depends on the position of the mass. What is the change in the kinetic energy of the mass as it moves from x=0.0m to x=3.0 m ?

A. 0.0J
B. 20 J
C. 50 J
D. 60 J

Answer 1

Correct Answer - C
Change in KE-Workdone
-Area of graph
`=1//2(1)(20)+(2)(20)=50J