Use this diagram to answer problems 10-12. (3pt) A pendulum weight is released in position A. The weight moves through positions B, C, D, and E.
8. At which location(s) does the pendulum have maximum potential energy? ___
a. A and B
b. B and D
c. C only
d. D and E
e. A and E

9. At which location(s) does the pendulum have maximum kinetic energy? ___
a. A and B
b. B and D
c. C only
d. D and E
e. A and E

10. At which location does the pendulum have the most energy?
a. A and B
b. B and D
c. C only
d. D and E
e. A and E
f. It is the same at all points

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