a vehicle accelerates with 0.4m/^2 calculate the time taken by the vehicle to increase its speed 20m/s to 40m/s

f is prop to m1xm2 double m1 double force

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