Question

Can someone help me on this one?

What is the momentum of a 76-kilogram horse running at a speed of 45 kilometers/hour?

A) 2.5 x 10^2 kilograms*meters/seconds
B) 3.4 x 10^4 kilograms*meters/seconds
C) 3.4 x 10^3 kilograms*meters/seconds
D) 9.5 x 10^2 kilograms*meters/seconds

Answer 1

momentum = mass * velocity or
momentum = kilogram of horse * kilometers/hr
does that help.. or make it worse? haha ^_^

Answer 2

So it's B or C right? Not sure which one or if it actually is one of those.

Answer 3

ok ok, I'm getting an idea where you are at.
soooo, anytime... Everytime the momentum equation is used, the velocity, or speed, needs to be in meters/second. and the question gave us kilometers per hour, sooo we need to convert the speed of 45kilometers/hour into _?_meters/second.
can you do that? if not I can show you how ^_^

Answer 4

@FearTheGrace

Answer 5

I got it wrong because I was running out of time and just chose a random one haha, thank you though.

Answer 6

dang :(
for next time here it is:\[\frac{ 45 kilometers }{ hour } \times \frac{ 1 hour }{ 60 minutes}\times \frac{ 1minute }{ 60seconds }\times \frac{ 1000meter }{ 1kilometer} = \frac{ 12.5meters }{ second }\]
12.5*76 = [answer]

Answer 7

Well thank you, you're so awesome haha.

Answer 8

^_^

Answer 9

What is the momentum of a 76-kilogram horse running at a speed of 45 kilometers/hour?