Physics 12
posted by G .
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.

0.96j m/s