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## Homework Statement

A scout walks 5 km due east from camp, then turns left and walks 4.5 km along the arc of a circle centered at the campsite, and finally walks 3 km directly toward the camp.

(a) How far is the scout from camp at the end of his walk?

___ km

(b) In what direction is the scout's position relative to the campsite?

___ ° (clockwise from north)

(c) What is the ratio of the final magnitude of the displacement to the total distance walked?

___

A particle moves in the xy plane with constant acceleration. At time zero, the particle is at x = 3.0 m, y = 6.0 m, and has velocity v = 1.0 m/s i + 7.0 m/s j. The acceleration is given by the vector a = 9.0 m/s i + -1 m/s j.

What is the velocity vector at t=3.0s

I got (28 m/s) i+ (4 m/s) j

What is the position vector at t=5.0s

What is the magnitude and direction of the position vector