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1.What is the speed of light in miles per second (to the nearest thousand)?
2.How long, to the nearest tenth of a year, does it take light from the Sun to reach our nearest neighbouring star: Proxima Centauri?
4.2 years (discretion of plus or minus 0.1 years)
3.In miles per hour, how quickly does the Earth orbit the Sun?
70,000 mph
4.How long does it take from light from the Sun to travel to Earth?
8 minutes and 20 seconds (discretion plus or minus 20 seconds)
5.What is the current land speed record?
763.035 miles per hour (discretion plus or minus 5 mph)
6.What was the top speed in miles per hour of the first ever train?
4 miles per hour (discretion of plus or minus 1 mph)
7.What is the speed of sound at sea level?
761.02 mph (discretion plus or minus 5 mph)
8.At the equator, in miles per hour, what speed of the ground beneath your feet, as a result of the Earth's rotation?
1,000 mph
9.What speed in miles per hour must a rocket attain to escape Earth's gravity?
18,000 mph
10.On average who's hearts beat faster; men or women?