Why is it often easier to start a fitness program than it is to maintain one? a. the motivation at the start of a program is often higher than later on when the progress made might be less obvious. b. at the start of a fitness program, the body is less used to physical activity so it feels better. c. maintaining a fitness program decreases an individual's ability to sleep, making it more difficult to maintain a program than to begin one. d. all of the above

A.

The motivation at the start of a program is often higher than later on when the progress made might be less obvious.

the force required to move the cart is divided by three or 33.33 n.

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