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. 😉

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….

Just to add, that any help would really really be appreciated! I have been pondering this for about an hour. I only have about 2 more hours tomorrow to get this whole coursework complete before it’s due in on Tuesday.

My thoughts… Please note that I am NOT suggesting that I always agree with a.net’s decision making processes, but what follows is WHY I think your pics have been rejected based on knowing something about that process;

1. The flight deck shot

There are two problems. First, the rather distracting arm top right (and the ugly water bottle bottom right FWIW). Second, the flash glare on the autopilot panel and to a limited degree on the EFIS screens – a.net does not like flight deck pics with flash glare. Do not bother to appeal this rejection – the problems are insurmountable, its an easy badmotiv call, and appeal will only support the original decision

2. The cabin shot

Less sure about this one. It looks a little soft but I’m on a lap top screen right now so its difficult to be sure. Not really sure about the motiv thing, but in principal I think that the pic would be better had you stood up to take it – it is a bit all seat backs and overhead bins. Whether I would have rejected it had I been screening and had the quality been there – dunno

Andy

Many thanks for your opinions Andy.

What would a.net expect me to have done about the problems in the cockpit shot? I’m thinking about when I am able to get cockpit access in the future. Ask the pilot to move?!

I just see “Image Not Available”. If you post a valid link, as a FORMER airlines.net screener who is (a) happy to take a conflicting view to a.net when appropriate and (b) prepared to defend a lot of what happens behind the scenes at a.net when people make unjustified adverse comments, I would be happy to offer an opinion.

Andy

Hi Andy, sorry about the photos not showing up. I’m in a hurry to get to 6th form right now, I shall upload them from a different location this evening. Please check back then!