2. -12 points Tipler6 3 P045 My A stationary radar operator determines that a sh

Question

2. -12 points Tipler6 3 P045 My A stationary radar operator determines that a ship is 15 km south of him. An hour later the same ship is 18 km southeast. If the ship moved at constant speed and always in the same direction, what was its velocity during this time? (Hint: Take the origin to be the location of the radar.) km/h)i+ km/h) eBook My -2 points TiplerG 3P055 A plane fies at an airspeed of 262 km/h. A wind is blowing at 83 km/h toward the direction 60° east of north ) In what direction should the plane head in order to fly due north relative to the ground? o west of north (b) What is the speed of the plane relative to the ground? km/h eBook

Explanation / Answer

(2) initial position vector= r1= -15 j km

final position vector=18cos45i-18 sin45j

r2=(12.73i-12.73j )km

displacement= r2-r1

d=(12.73i-12.73j )km-(-15j)km

d=(12.73i+2.27j)km

now time t= 1 hour

velocity= displacement/time= (12.73i+2.27j )km/1hour

so velocity= (12.73km/h)i+(2.27km/h)j

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