What is the si unit for momentum?

kg • m
kg • meters per second
kg • meters squared per second
kg • meters per second squared

Answer : The S.I unit of momentum is, kg • meters per second

Explanation :

Momentum : It is defined as the motion of a moving body. Or it is defined as the product of mass of velocity of an object.

Formula of momentum is:

where,  

p = momentum

m = mass

v = velocity

The unit of mass of kilogram (kg) and the unit of velocity is meter per second (m/s).

Thus, the unit of momentum will be:

Thus, the S.I unit of momentum is, kg • meters per second

not too sure thinking it will always be directed towards the centre of the earth. could be wrong not sure

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.