Quote:
Originally Posted by Dunc
There is some serious confusion going on here between acceleration and speed/velocity. The acceleration of any falling object will be equal to gravity; so how can a buggy 'look' as though it is accelerating 10 times faster than it is? You may be able to convince me its velocity appears increased, based on car lengths.
|
Exactly. If you're looking at a film of a car, which has no other clues to the size, then your brain would assume that it's about "car-sized", i.e. about 4 m long.
It will then make further assumptions about how fast it should be able to move, i.e. how many car-lengths it can cover in one unit of time - either from a standing start, or at full speed.
Based on that argument (and yes, I know not everything will scale - air is a fixed density, etc) then if you scale is time, velocity/acceleration follow.
I just think it would be interesting to try to produce a video where the cars appear to move like cars, not ferrets on speed...