5-meters? My guess is much of it would burn up by the time it hit, and when it did hit, it wouldn't be terribly bad. Like, on the order of maybe destroying a couple houses? World destruction, not even close.
Here, for some context:http://www.youtube.com/watch?v=wG_ijnffzcs
45m meteor made a crater the size, roughly, of a city block.
Maybe I'm wrong though, I'm not terribly well read on this stuff.
5 metres is going to do nothing. It will burn up well before it hits the earth.
Looking at a ridiculous over-estimate of the damage it could do based on the 45m ~ a city block sized crater:
Let us assume crater radius is proportional to the energy of the meteor (seems fairly reasonable, might be area instead of radius though) which is proportional to the volume of the meteor (will give an overestimate as a smaller meteor will be slowed more in the atmosphere).
Let us now assume that the proportion of the meteor burnt off in re-entry is constant across all meteors is constant (this is clearly absurd, it's far more likely to be that the amount burnt off is approximately constant (provided some meteor survives, otherwise it just all goes)). This means That, given a city block 200m across, a crater that size would have a radius ~100m. A 5m rock has 729 times less volume than a 45m rock so, given our assumptions, would produce a crater about 14cm in radius so a foot in diameter.
That's still a noticeable crater and would put a considerable dent in your car however, bear in mind that these assumptions are bound to given enormous over-estimates so any actual crater will be orders of magnitude smaller (and, in all probability won't appear at all).