Question

I have no idea how to get the answer to Practice Problem 11. Apparently its suppose to be: (150 m, 213.6 degrees)

S, eas). What was the cnange Secy Practice Question 11 Charlene walks 125 m (-i) and then walks 83.0 m (-j). What was her net displacement? 4drols Practice Question 12 A small private plane flies from city A to city B by undergoing a displacement of (520 km, 110°). The plane leaves city B and flies to city C with a displacement of (375 km, 200°),. What was the net displacement of the plane relative to city A? 12.0 mi's 12.0 m's Practice Question 13 Figure 7 shows a car moving around a circular track in the x-y plane with a constant speed of 12.0 m/s. Let v2 be its velocity at position 2 and v, be its velocity at 3. What is (v, - v2)? Make a sketch of all three vectors, showing their vector relationship. 90 12.0 m/s Figure 7 Practice Question 14 Three forces are applied to a large boulder in an attempt to move it. The forces are F, (600 N, 130°), F, (780 N, 200°), and F, (550 N, 165°). What is the net force ac resistive force acting on the boulder? (Note: the letter "N" stands of "newton", the SI unit for force.) ting on the boulder? If the boulder does not move, what is the 1D- (472 m 18 no

Also I can get the Newtons for Practice problem 14, but I can't quite figure out how to get the degrees for theta. Apparent answers are: (1684 N, 169 degrees), (1684 N, 348 degrees).

Answer 1

213.60. (2)