A bird is flying 3 m above the surface of water. if the bird is diving vertically down with speed =6 m/s, its apparent velocity as seen by a stationary fish underwater is:
(μₐₜₑᵣ = 4/3)
a. 8 m/s
b. 6 m/s
c. 12 m/s
d. 4 m/s