Current Attempt in Progress 3' } A A > } A A If B is added to A, the result is 7.44' + 1.10}. If B is subtracted from A, the result is 5.4i + 6.4j. } What is the magnitude of A? 4 eTextbook and Media Hint Save for Later An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 5.4 km, but when the snow clears. he discovers that he actually.( traveled 8.4 km at 510 north of due east. (a) How far and (b) in what direction {south of due west} must he new travel to reach base camp? (a) Number n Units v (b) Number n Units v Current Attempt in Progress (a) In unit-vector notation, what is the sum of a = (4.2 m )i + (2.5 m ) ; and b = - 15.0 m )i+ 6.4 m )j. What are (b) the magnitude and (c) the direction of a + b (relative to i)? (a) Number HI HI Units V + (b) Number HI Units V (c) Number i Units VCurrent Attempt in Progress A car is driven east for a distance of 49 km, then north for 29 km, and then in a direction 29'" east of north for 29 km. Determine (a) the magnitude of the car's total displacement from its starting point and (b) the angle (from east] of the car's total displacement measured from its starting direction. (a) Number n Units v (b) Number n Units v