A fire hose of internal diameter is fitted with a nozzle of diameter

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Fluids · Fluids

Problem

A fire hose of internal diameter

6\,\text{cm}

is fitted with a nozzle of diameter

2\,\text{cm}

. If water approaches the nozzle with a speed of

3\,\text{m\,s}^{-1}

, what is the speed of water as it leaves the nozzle? (a)

9\,\text{m\,s}^{-1}

(b)

81\,\text{m\,s}^{-1}

(c)

27\,\text{m\,s}^{-1}

(d)

54\,\text{m\,s}^{-1}