A) what is the angular momentum of 0.25kg ball rotating on the end of a rope in a circle of radius 0.5m at and angular speed of 15.0 rad/s?

b) what if it rotates at 450.rpm

PART A)

Angular momentum is defined as

here we know that

now we have

m = 0.25 kg

r = 0.5 m

now we will have

also we know that

now we have

Part B)

now the ball is rotated with speed 450 rpm

now we have

f = 450 rpm = 450/60 hz

so angular speed is given as

now again by above formula

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong

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