Posted by **G** on Friday, March 29, 2013 at 9:19pm.

Help will be appreciated.

In a large department store, a shopper is standing on the "up" escalator, which is travelling at an angle of 40 degree above the horizontal and at a speed of 0.75 m/s. He passes his daughter, who is standing on the identical, adjacent "down" escalator. Find the velocity of the shopper relative to his daughter in unit vector notation.

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