When light hits the boundary between two different materials, it can undergo:.

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement

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