A car moving to the East speeds up from rest to 8 m/s in 2 s. What is its acceleration?

to the East speeds up from rest to 8 m/s in 2 s. What is its acceleration

solution:

      Given,

initial velocity(u)= 0m/s

final velocity(v)= 8m/s

time(t)= 2s

acceleration(a)=?

Now,

       a= v-u/t

  or, a= 8-0/2

  or, a= 8/2

  or, a= 4

Its acceleration is 4m/s square.

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