5. A forest ranger is looking for a lost hiker. The ranger starts at the ranger station and walks 4 km [N 300 W] in 1.5 hours and then changes direction to cover 9km [ E ] in 2.50 hours before finding the lost hiker. Find the hiker's displacement 'From the ranger station so they can call back to the station for rescue. Don't forget to tell them exactly what direction to head! You may solve using any method (scale diagram, trig, or horizontal 6: vertical components) - in all cases you mm mm. Determine: a) the ranger's displacement b) The ranger's average speed [3) the ranger's average velocity