What is the velocity of an object that has a momentum of 4,000 kg-m/s and a mass of 115 kg? round to the nearest hundredth.
a. 35.67 m/s
b. 34.78 m/s
c. 37.43 m/s
d. 36.5 m/s

B. 34.78 m/s

Explanation:

The momentum of an object is given by:

where

p is the momentum

m is the mass of the object

v is its velocity

For the object in this problem, we have

p = 4000 kg m/s

m = 115 kg

So, we can solve the equation to find v, the velocity:

he made 11 calls in one day

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