Which object has more momentum a 400 kg car traveling at 6 m/s or a 15 kg cannonball traveling at 15 m/s?

The car having 400 kg and speed 6 m/s  have more momentum than The car  having 15 kg and speed 15 m/s  .

Explanation:

Given as :

The mass of Car A = 400 kg

The velocity of Car A = 6 m/s

The mass of Car B = 15 kg

The velocity of Car B = 15 m/s

Let The momentum of Car A =

And The momentum of Car B =

Now ,

Since momentum is the property of moving body , and it is defined as the products of mass velocity of body  .

I.e, M = mass × velocity

So, The momentum of Car A  = mass of Car A × velocity of Car A

I.e   = 400 kg × 6 m/s

I.e   = 2400 kg m/s

Again ,

So, The momentum of Car B  = mass of Car B × velocity of Car B

I.e   = 15 kg × 15 m/s

I.e   = 225 kg m/s

So, ∵  2400 kg m/s 225 kg m/s

∴      

so, Momentum of car A more than momentum of car B

Hence The car having 400 kg and speed 6 m/s  have more momentum than The car  having 15 kg and speed 15 m/s  . Answer

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

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.