Momentum Velocity?

Question

If a spaceship has a momentum of 30,000 kg-m/s to the right and a mass of 400 kg, what is the magnitude of its velocity?

I just need to clear this up; to find this answer, do I multiply or divide for the answer? I'm getting the hang of Physics rather quickly but I'm just not sure what to do here.

Thanks so much in advance!

Answer 1

Linear Momentum= mass x speed x cos (angle)
In this case the angle is zero degrees. cos 0 =1
so if you divide momemtum by the mass you have the speed value,which is the magnetude of velocity.

Answer 2

momentum equals mass times velocity. 30000kg*m/s= 400kgXm/s where X is velocity. solve for X TO GET velocity. the units can help you decide if you multiply or divide. if you divide by 400kg, the kg units divide out and m/s unit remains. use units to help you do these problems.write them out with the numbers and solve for the one you need.