Recent content by galtspeaking

ah, I see..so they are all the same, b/c mgh is the same for all of them, i was considering the total height each of the slopes from the origin, i think that's where i was wrong

Homework Statement [PLAIN]https://dl.dropbox.com/u/9215647/webassign%20s.JPG Rank the slopes (greatest first) according to the work done on the skater by the gravitational force during the descent on each slope, Homework Equations work=change in potential energy, ie. delta U =...

is it possible for a rocket to attain a speed greater than the velocity with which exhuast gases leave it? explain. I am not sure about this, because relative to the gas, I think yes, but I am not sure if it is also greater relative to the ground. This question is from momentum/impulse unit...