Say there was a tunnel that went through the centre of the Earth that came out on the exact opposite side to the entrance. If you jumped down it, would you have the momentum to fly out of the other side, or would you be pulled towards the Earth's centre of mass and be crushed? This is assuming of course that the person will not burn :P

If one drops a frozen turkey from a table, it hits the floor. If one instead drops it from space, it burns up in the atmosphere. Thus, there should be one altitude in between from which you can drop it for it to be done when it comes down.

I realize that it's probably going to go black on the outside and still stay frozen on the inside. How can you deal with this? I will accept leaving it for some time after the fall to allow the heat to distribute properly, I will also accept some or a lot of the outside to burn up if the centre is cooked, burned turkey can be removed but I've heard bad things about uncooked bird.

How does this change with the stuffing? Will it help a lot to thaw it?

The steeper the road, the slower I cycle - to the point where I am reduced to walking speed. Is there a gradient beyond which the mechanical advantage offered by a bicycle diminishes to the same (or less than) walking?

Simon Forbes

Hove

I've worked out mine because I'm applying to Uni, and I've shoved it into my personal statement. I want to make sure I have a reasonable (approximate) answer, so if you fancy working out an approximation of your angular momentum, it would be really useful. 

It's also quite a fun experiment. Don't get too dizzy. 

Whilst studying Mechanics (M1), you often use "light and inextensible" to describe string. So my friend posed a hypothetical question that if you had some string that was 1million light years long with me on one end and him on the other. If he pulled one end how long would it take for the my end to move. I thought it would be instantaneous but my teacher thought different.

If I place a block on a conveyer belt moving at 10m/s then place that conveyer belt on another conveyer belt moving at 10m/s in the same direction the block would now be moving at 20m/s. We are always told it is impossible to get things quicker than the speed of light but with enough conveyer belts moving at high enough speeds why would it not be possible to get the block moving this fast? All impracticallities aside