The given graph shows the motion of a particle of mass $10/7\; kg$ the action of an external agency with power. Its initial position is $x=0$ and initial velocity is $1 m/s$ . velocity at $x=10 m$ is (use the graph)

Question

$ a)\; 4 m/s \\ b)\; 2 m/s \\ c)\; 3 \sqrt 2 m/s \\ d)\; 100/3 m/s $