Question

A roller coaster car moving at a velocity of 30 meters/second has a momentum of 2.5 x 10^4 kilogram meters/second. What is its mass?

Answer 1

We know that in physics the momentum of an object is defined as the product of mass by the velocity of the object.

That is to say:

`P = mv`

Where P is the momentum =
`2.5\ x\ 10^4` kilograms meters/second

m is the mass

v is the object velocity = 30 m/s

In this problem we have the momentum of the roller coaster and its speed, but we want to find its mass. Then we divide the momentum between speed.

`(p)/(v) = m`

`m = (2.5\ x\ 10^4)/(30)`

`m = 833.33\ kg`

The mass is 833.33 kg