If a rocket-powered sled is accelerated to a speed of 440 m/s in 2.20 seconds, then what is the acceleration?

Explanation:

The acceleration of an object is calculated as

where

v is the final velocity

u is the initial velocity

t is the time taken for the velocity to change from u to v

For the rocket in this problem:

u = 0 (it starts from rest)

v = 440 m/s is the final velocity

t = 2.20 is the time taken

Substituting,

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