Water from a tap emerges vertically downwards with an initial speed of 1.0 m s−1 . The cross-sectional area of the tap is 10−4 m2 . Assume that the pressure is constant throughout the stream of water, and that the flow is steady. The cross-sectional area of the stream 0.15 m below the tap is
a. 5.0×10−4 m2
b. 1.0×10−5 m2
c. 5.0×10−5 m2
d. 2.0×10−5 m2