An urban area is characterized by
a) a dense human population
b)farm land
c)highways
d)public transportation

Option (A) is the correct answer.

Explanation:

An urban area is an area which is developed and it is a place where people can get almost all the things of their need easily.

Therefore, more an more people would like to live in an urban area as there will be more resources which can make people's work easy.

Hence, we can conclude that out of the given options an urban area is characterized by a dense human population.

imma come back to you hold on

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied