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linear velocity is a change of speed in a linear fashion. Angular speed is the rate of change of angle with respect to time. These two are convertible in a case of a circle motion. the lenght of an arc is l = RO. where O is the angle. hence v= l/t and therefore v=RA where A = O/t.

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16y ago
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13y ago

The linear diameter of the sun is roughly 864,000 miles ... about 109 times as big

across as the earth is. In order to cover up a disk that size, you need something

else that's 864,000 miles across.

The angular diameter of anything means how far you have to turn your eyes in order

to go from one end of it to the other end. That depends on how far away you are from

the object. Any object fills more of your vision when it's nearby than it does when it's

far away.

Seen from the earth, the sun is about 1/2 degree wide. Seen from your face, your

thumb is also about 1/2 degree wide when you stretch your arm out in front of you.

If you close one eye and move around a bit, you can cover the sun with your thumb.

Not because both of them have the same linear diameter, but because they have

the same angular diameter.

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12y ago

linear acceleration = radius * angular acceleration

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Q: What is the difference between angular and linear diameter?
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