You spot a plane that is 1.50 km north, 2.5 km east, and at an altitude 5.0 km above your position. (a) how far from you is the plane? (b) at what angle from due north (in the horizontal plane) are you looking? (c) determine the plane’s position vector (from your location) in terms of the unit vectors, letting be to- ward the east direction, be toward the north direction, and be in vertically upward. (d) at what elevation angle (above the hori- zontal plane of earth) is the airplane?

16. a brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 n on him. the mass of the losing player plus equipment is 90.0 kg, and he is accelerating at 1.20m/s2 size 12{1 "." "20"" m/s" rsup { size 8{2} } } {} backward. (a) what is the force of friction between the losing player’s feet and the grass? (b) what force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg? (c) draw a sketch of the situation showing the system of interest used to solve each part. for this situation, draw a free-body diagram and write the net force equation.