I have already mentioned frictional forces as one of the possible causes. But I think if that was the case, you’d acually expect the Kinetic Energy to be less than the GPE, as energy would be lost in heat etc.

The fact that the KE is greater than the loss in GPE, makes me think that the air track would be leaning so that the truck is travelling slightly down hill. But I need some proper explanation, and maybe another way of proving that this is the case….

Hmm yes, annoying, isn’t it? 😉

Does it state the track is frictionless? That may be the purpose of the air track. Otherwise frictional forces might be playing a part in the difference?
I remember doing something similiar a year or two ago, or I probably did it twice in two years as I failed the course first time round, 😉 unfortunately I can’t remember some of the possible causes. 😉

This has been lurking somewhere in the back of my mind recently, mainly because I know it could be difficult this year with various other trips planned…
I’m a bit unsure of what I might be up to this summer apart from what’s booked so far so it’s kind of hard to commit to anything. End of July or 3rd week in August would probably be best as far as I’m concerned, however obviously we’re probably going to end up with the usual situation of not being able to find at date that can suit everyone. 😉

Nice shots, especially 5B-DBV and G-FJEA, both I’ve flown on (that’s the 2nd thread I’ve said something like that). 😉

It’s amazing how similiar Helio’s basic livery looks to Excel’s once you’ve removed the titles!

Well it will be a dissapointment for LBA. But I think they have their aircraft over utilised. They have 4 routes into DUB with at least 2 flights a day somedays 4 and the amount of lenghty delays they have is ridicolous.

They need to cut down on routes and give their aircraft some down time and look after the routes which are making money.

Im not saying LBA-Poland isnt making money but Ireland-Poland is BIG business and the last thing they need is long delays espeically now that Ryanair are competeing on the routes.

On a side not WizzAir have just announced they will fly 3 times weekly betwwen Cork and Katowice.

Tell me about it, incredibly unreliable!! Although in fairness they have been doing alright from EDI since they got their latest B737.

It looks like there are two former Royal Jordanian A320’s on the market http://www.speednews.com/listings/history/xls/latestlistings.xls . C/N’s are very old and in need of some TLC. I wonder if they’re the aircraft in question?

These are believed to be the 2. It doesn’t surprise me that GRE have gone for the best they can get, or not. 😉

Liverpool Daily Post and Echo is reporting a first visit to Heathrow for an overnight stay on May 18th. Hope they are right.

It’s been confirmed by BAA, it’ll be arriving at Midday.

I won’t be there myself, just have to wait a couple of years until they are regulars at LHR…