Why are experimental investigations the best type of scientific investigation to demonstrate cause-and-effect relationships?
1 answer:
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Answer:
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
