How Do You Calculate the Speed and Velocity of a Clock's Second Hand?

[phizics09]

Homework Statement

The sweep second hand of a clock has a length of 2.0 cm.

Homework Equations

a) What is the speed of the sweep second hand tip at the 6 o'clock position?
b) What is the velocity of the sweep second hand tip at the 6 o'clock position?

The Attempt at a Solution

I don't really understand how to use 2.0 cm to solve the problem. Do you figure out the length it takes for the second hand to reach 6 o'clock and divided 2.0 cm by the answer?

 

[PeterO]

Homework Statement

The sweep second hand of a clock has a length of 2.0 cm.

Homework Equations

a) What is the speed of the sweep second hand tip at the 6 o'clock position?
b) What is the velocity of the sweep second hand tip at the 6 o'clock position?

The Attempt at a Solution

I don't really understand how to use 2.0 cm to solve the problem. Do you figure out the length it takes for the second hand to reach 6 o'clock and divided 2.0 cm by the answer?

In one minute, the tip of the hand will sweep out a circle of radius 2 cm. What is the circumference of that circle? What speed in m/s does this motion thus represent?