Question

What is the mass of a stone moving at a speed of 15 meters/second and having a momentum of 7.5 kilogram·meters/second?

Answer 1

the clue is in the units

\[\frac{ \frac{ kg m }{ s } }{ \frac{ m }{ s } } =kg\]

so divide the momentum by the velocity to get the mass

Answer 2

do any body knows what the awnser is

Answer 3

yes - I do

as I said above (7 months ago)

divide the momentum by the velocity to get the mass

Answer 4

but whats the velocity

Answer 5

well - loosely speaking - it's the speed

as given in the question:
"a stone moving at a speed of 15 meters/second "