When is the mass of an object if it exerts a force of 160 N and an acceleration of 8.15m/s^2

f=mam=f/am=20kg

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

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;