Question

Suppose a truck has a momentum of 40,120 kg • and a mass of 1,180 kg. what is the truck’s velocity?

Answer 1

34m/s is the correct answer!

Answer 2

The momentum of an object is the product between the mass m of the object and its velocity:

`p=mv`
The truck in our problem has momentum equal to

`p=40120 kg m/s`
and a mass of

`m=1180 kg`
so, if we re-arrange the previous formula, we can use these data to find the velocity of the truck:

`v= (p)/(m)= (40120 kg m/s)/(1180 kg)=34 m/s`