How does an external force change the motion of an object at rest or an object in motion?

By adding an external force, your Sigma (Sum of) Forces will now have to include that added external force.

Explanation:

By adding an external force, your Sigma (Sum of) Forces will now have to include that added external force --> BECAUSE, YOUR MASS OR ACCELERATION WILL BE CHANGED (both being components of Force = m*a).

the answer is b

explanation:

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