A fish swimming in a horizontal plane has velocity v = (4.00 ± 1.00) m/s at a point in the ocean where the position relative to a certain rock is r = (14.0 ± 2.20) m. After the fish swims with constant acceleration for 15.0 s, its velocity is v = (21.0 ± 3.00) m/s.
a) 25 m/s
b) 19 m/s
c) 22 m/s
d) 20 m/s