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Angular and Linear Velocities, Page 5

Linear VelocityCarousel

Now imagine that you are riding on a carousel next to someone, and you are sitting on the outside. Both of you have the same angular velocity, but you have to travel a longer distance than your friend who is sitting on the inside.

How do you find this linear velocity?

If an object moves with a constant linear velocity for a period of time, then the distance the object travels is given by the equation:

s = vt, where v is the linear velocity and t is time.

Solving for v:

v = s/t

Using the formula for the length of a circular arc, s = r theta:

v = rθ/t

Linear velocity is therefore defined as:

v = r * θ/t, or v = rω, where (ω) is angular velocity given in radians per unit of time