A train in Japan can travel 813.5 miles in 5 hours

162.7miles/hr

Explanation:

Given parameters:

Distance covered by the train  = 813.5miles

Time taken  = 5hours

Unknown:

Speed of the train  = ?

Solution:

Speed is a physical quantity.

It is mathematically expressed as;

      Speed  =

So, input parameters and solve;

   Speed  =  = 162.7miles/hr

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.