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Question

**Question**

The*x*and*y*components of a vector*r*?are*r*x= 14mand*r*y= -8.5m, respectively.

a) find the direction and of the vector r

b) find the magnitude of the vector r

c) suppose that rx and ry are doubled, find the direction and the magnitude of the new vector r

d) find the derivative of r from question b