Aberystwyth at 633 mph?

What's this? A new land speed record? No, it's speed at the circumference of the earth as it rotates once every 24 hours.

The circumference of the earth at the equator is approx 24,000 miles giving a speed of 1000 miles at the equator. Using a cosine equation and putting in Aberystwyth's latitude of 52.4N we get 633 mph.

Equation:

circumference = 2 x Pi x R x Cos(Pi x 52.4/180) where R = radius of the earth = 3963 miles

Source: Ask A Scientist

World's biggest truck?

Liebherr T 282B mining truck

This fine example of German engineering, the world’s largest earth-hauling dump truck, has an empty weight of 203 metric tons, a load capacity of 365 tons, and a wheelbase of 22 feet.  It’s powered by a 90-liter diesel engine that puts out 3,650hp.  The air-conditioned cabin sits eighteen feet above the ground.

And the fuel tank holds 1600 - 2000 gallons.

Source: The Munchkin Wrangler