OpenStudy (anonymous):

A 65 kg ice skater traveling at 6.0ms^-1 runs head-on into an 85kg skater traveling forward at 4.5ms^-1. At what speed and in what direction do the skaters travel if they move together after the collision?

5 years ago
OpenStudy (jamesj):

Use conservation of momentum

5 years ago
OpenStudy (anonymous):

i have no idea what that is...

5 years ago
OpenStudy (anonymous):

my teacher has never taught us any of this, she just gave us this worksheet and said: do this for tomorrow

5 years ago
OpenStudy (jamesj):

Watch this lecture. It's a bit advanced for where you are, but you'll get the important idea, and Conservation of Momentum is a very, very important idea. http://ocw.mit.edu/courses/physics/8-01-physics-i-classical-mechanics-fall-1999/video-lectures/lecture-15/

5 years ago
OpenStudy (jamesj):

it is the key to solving all of the problems you have posted.

5 years ago
OpenStudy (anonymous):

thats an hour long lecture, i dont exactly have time for that...

5 years ago
OpenStudy (jamesj):

Open your text book then. Conservation of Momentum. Find it in the contents or the index.

5 years ago
OpenStudy (anonymous):

do you mind helping me with this one?

5 years ago
OpenStudy (anonymous):

Brent give it a try yourself.....Like James said .....in case you still dont understand we will help

5 years ago