A canoe is drifting left toward a hungry hippo with a velocity of 7\,\dfrac{\text{m}}{\text{s}}7 s
m

7, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction. The canoe rider starts paddling frantically, causing the canoe to travel to the right with a constant acceleration of 6 \,\dfrac{\text m}{{\text s}^2}6
s
2

m

6, start fraction, start text, m, end text, divided by, start text, s, end text, squared, end fraction.
After 4\,\text s4s4, start text, s, end text, what is the velocity of the canoe?