Calculating velocity of water flow form tap

[jannx3]

Homework Statement

A measuring cylinder collects 475 mL of this
water in a minute. At the top the diameter of the stream is 0.700 cm.

Homework Equations

What is the velocity of the stream 20.0 cm below the top?

The Attempt at a Solution

im not sure which formula to use?
i was thinking v=√2gh

 

[SteamKing]

Homework Statement

A measuring cylinder collects 475 mL of this
water in a minute. At the top the diameter of the stream is 0.700 cm.

Homework Equations

What is the velocity of the stream 20.0 cm below the top?

The Attempt at a Solution

im not sure which formula to use?
i was thinking v=√2gh

You are given a known volume of water which collects in a given amount of time in a graduated cylinder with a known diameter. Why do you think v = SQRT(2gh) is the appropriate formula to use? Do you have the necessary information to even use this formula?

 

[rude man]

First, get the velocity of the water at the top.

Then figure out how much the velocity changes 20 cm. below the top.