- #1

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## Homework Statement

## Homework Equations

Va = Vb + Va/b

Va = Vb + (wab x ra/b)

## The Attempt at a Solution

OK so here is part of my solution:

My velocity for B is correct according to the book. But I'm confused about D. The only problem here is that the velocity of D only has an i component, no j component. How do we know that and why is that? Also, how come the velocity of D isn't zero since it's a fixed point?