Comment 117758

By Ryan (registered) - website | Posted April 19, 2016 at 15:54:01 in reply to Comment 117734

Don't forget body weight. In my case, my weight plus the weight of my bike (a late model Norco Bushpilot) is around 215 lbs. Here's a table for all the speeds I can realistically achieve (including going downhill):

Curb Weight  Speed          Kinetic    
(lbs)  (kg)  (km/h)  (m/s)   Energy     
-----------------------------------
 215    98     10     2.8      376
 215    98     20     5.6    1,505
 215    98     30     8.3    3,386
 215    98     40    11.1    6,020
 215    98     50    13.9    9,406
-----------------------------------

I've got the same overall kinetic energy going 50 km/h on my bike as I have going 14.3 km/h in my car.

By the way, if you want some unpleasant reading, do a google search on "kinematics of trauma".

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