Saturday, 19 March 2011

Concrete Barriers

These concrete barriers will stop vehicles, even trucks. Here are the vital statistics: Truck weight = 32 tons. Speed = 50 mph. Kinetic Energy = 5.5 MILLION ft. lbs. Stopped dead in 24 inches!



YouTube link

(thanks Cora)

2 comment(s):

Nebraska said...

truck weight 32 tons ? MAYBE 32000 lbs.

Sciencetech said...

Somebody is practicing physics without a license...

1. ft-lbs is a measure of torque, not energy.

2. Nebraska is right. The truck isn't 32 tons. Maaaaybe 32,000lbs. Even that seems high.