Question

Velocity-time graph of a particle of mass 5 kg moving
in a straight line is as shown in figure. Work done
by all the forces acting on particle from t = 0 to t =
2 s is equal to
v(m/s)
h
4
u
0
2
t(s)
(1) 20 J
(2) 60 J
(3) 40 J
(4) 80 J​

Answer 1

I think the answer is:

(4) 80 J​