SP1b. During a 5.0 second interval, an object's velocity changes from 25 meters per second
east to 15 meters per second east. Determine the magnitude and direction of the
object's acceleration.

2 m/s^2, west

Explanation:

Vf=final velcoity

Vi=initial velocity

t=timw

=

= - 2 m/s^2

The - changes direction and makes it opposite

2 m/s, west

a straight line sloped

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day