A boar charges directly toward a hunter with a constant velocity of 18 m/s. At the instant the boar is 90m away from the hunter tires an arrow at 30° with the horizontal. With what velocity must the arrow leave the hunter if it is to strike its target? ANS. 23.2 m/s

An airplane heads due east at 110 m/s through a 25 m/s cross wind blowing from north to south. The resultant velocity of the airplane is a. 112.805 m/s, 12.80° south of east O b. 135 m/s, 12.80° south of east O c. 112.805 m/s, 12.80° east of south O d. 85 m/s, 12.80° south of east If a vector Á has components Ax = -2 and A, = +3, then A lies in the O a. 4th quadrant O b. 1st quadrant O c. 2nd quadrant O d. 3rd quadrant

Geese migrate along north and south directions for well over a thousand kilometers in some cases traveling speeds up to about 100 km/h. If one such bird is flying at 100km/h relative to the air but there is a 34.0 km/h wind blowing from the west to east. A.) at what angle relative to the north-south direction should this bird head so that it will be traveling directly southward relative to the ground? Express answer in degrees  b.) how long will it take the bird to cover a ground distance of 500 km from north to south? ( Note: Even on cloudy nights many birds navigate using the earth's magnetic field to fix the north-south direction)

Q1. An archer aims at the bullseye of a target 50.0 m away. The arrow is at the same height as the bullseye. If the archer angles the arrow upwards at 12°, what must the arrow's initial speed be in order to hit the bullseye?