What is the correct use of ton or tons as in ten ton of rock?
tons, a plural
but one ton of rocks
This depends on how much rock you will use per square yard. Suppose you intend to use 1/100 tons (=20 lb) per square yard. Then if you have one ton of rock, it will cover 100 square yards. Similarly, if you intended to use 1/50 tons per square yard, 1 ton will cover 50 square yards. In general you want to use factor labeling: If you are using x tons per square yard, then write…
How big is a 10000 ton rock The recent meteor that hit Russia is said to have been 10000 tons not 10 tons?
A good estimate for the density of rock is about 1.5 tons per cubic meter. For a 10,000 ton rock this would give a volume of about 6,700 cubic meters. If the rock is spherical the diameter will be roughly 23 meters or 75 feet. This is close to official esitmates fo 65 feet for the object. Given the magnitude of the explosion, claims that the Chelyabinsk meteor was 10 tons are absurd.