If you walk 1.4 km north and then 4.8 km east, what are the magnitude and direction of your resultant displacement? a. magnitude: 5 km; direction: 73.7 degrees east of north b. magnitude: 4.6 km; direction: 73.7 degrees east of north c. magnitude: 5 km; direction: 16.3 degrees east of north d. magnitude: 4.6 km; direction: 16.3 degrees east of north

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.