>>> from fisica4 import cotxes

>>> t = cotxes(16.66, 10, 5500, 200)
>>> round(t, 1)
2672.7
>>> t = cotxes(20, 15, 9000, 0)
>>> round(t, 1)
6480.0
>>> t = cotxes(33.33, 15, 9000, 300)
>>> round(t, 1)
1522.1
>>> t = cotxes(33.33, 15, 9000, 0)
>>> round(t, 1)
1767.6
>>> t = cotxes(33.33, 15, 1000, 0)
>>> round(t, 1)
196.4