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A motorist drives south at 20.0 m/s for 3.00 min, then turns west and travels at...

A motorist drives south at 20.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.00 min, and finally travels northwest at 30.0 m/s for 1.00 min. For this 6.00 min trip, find the following values.

1. Find the total vector displacement.

2. The average velocity.

I know that for part 1 it is 4800 m and I know for part 2 it is 13.3 m/s, however, I do not know the magnitude (the angle in degrees south of west) for either part. Please help me find the magnitude and explain how you did it because I am extremely confused. The average speed is 23.3 m/s if that helps any.

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