Abird watcher meanders through the woods, walking 1.46 km due east, 0.123 km due south, and 4.24 km in a direction 52.4° north of west. the time required for this trip is 1.285 h. determine the magnitudes of the bird watcher's (a)displacement and (b) average velocity.

(a). The displacement is 3.11 m.

(b). The average velocity is 2.42 km/hr.

Explanation:

Given that,

A bird watcher meanders through the woods, walking 1.46 km due east, 0.123 km due south, and 4.24 km in a direction 52.4° north of west.

(a). We need to calculate the displacement

Using Pythagorean theorem

(b). We need to calculate the average velocity

Using formula of average velocity

Where, D = displacement

T = time

Put the value into the formula

Hence, (a). The displacement is 3.11 m.

(b). The average velocity is 2.42 km/hr.

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles