Match each simple machine with its description
wheel and axle
uses a rope, can change the direction
of a force
wedge
reduces the amount of friction when
an object is being moved
lever
is a ramp
inclined plane
similar to a seesaw can lift an object
can split apart an object
S
Done

the answer is kevlar

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid

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