Answer
(a) $Impulse = 5~kg\cdot m/s$
(b) v = 80 m/s
Work Step by Step
(a) There are approximately 10 squares under the graph. We can use these 10 squares to find the impulse. Note that each square is $50 ~N \times 0.01~s$.
$Impulse = (10)(50 ~N \times 0.01~s) = 5~kg\cdot m/s$
(b) $\Delta p = Impulse$
$m~\Delta v = Impulse$
$v = \frac{Impulse}{m} = \frac{5~kg\cdot m/s}{0.060~kg} = 80~m/s$