Some More Practical Units
I love this! Units are so much easier when they mean something.
The speed of sheep is funny, but too obscure. The traditional units are:
-- tortoise (0.02 m/s for typical pet) - "the drunken C-lister moved only slightly faster than a pet tortoise"
-- walk (1.5 m/s brisk) - "the lava came towards us about as fast as we could walk away from it"
-- jet (299 m/s A380) - "to get into a low orbit, Branson need to travel 25 times faster than a passenger jet"
You also need some better units of energy as a Norris Linguini composite unit is hard to grasp. The traditional newspaper story units are:
-- match (1kJ) - "the new LA diet contained the daily energy equivalent of two matches"
-- kettle (380 kJ is enough for a good pot of tea) - "recycling Chris Moyles saved the energy of 63 boiled kettles every day!"
-- car (65 GJ) - "that's enough energy to run a car for a year!"
-- hiroshima (63 TJ) - "Krakatoa exploded with the force of 12,000 hiroshima bombs"
Force is a tricky one as we have little direct sensation of small forces a little sensation of large ones. But recent pub conversations have used:
-- door (30N on average)
-- golf (7kN force of driver on ball)
-- jet engine (338kN Roll Royce Trent 900)