how do u get the mass?

Question

(momentum)p=8.62 x 10^36 kg m/s
v=225km/s
m=?

m=p/v





I'm not sure how to farther figure it.

Answer 1

You have everything you need in the equation, except you need to convert v into m/s instead of km/s otherwise you won't have the proper units of measurement to get down to kg.

so 225 km/s = 225km/s x 1000m/km/s = 225000m/s

Now, that you have equal units of measurement, apply the equation...

8.62 x 10^36 kg m/s divided by 225,000 m/s

the m/s cancel out and your answer is left in kg

3.8311 x 10^31 kg

Answer 2

first match units: 225 km/s = 225,000 m/s = 2.25 • 10^5 m/s.

then use your equation, m = p/v
m = (8.62 • 10^36) / (2.25 • 10^5)
m = 3.83 • 10^31 kg.

Answer 3

You answered your own question by typing "m=p/v". You're given the values of p and v, so according to the formula, m is p divided by v.