Volume bar huge before 10 AM..Why

#1
Volume bar is huge before 10 AM and how do we know that how much that bar is going to impact the underlying stock.

is that a -tive sign or +tive sign,
 
#3
Its obvious, as its start of the day and has maximum no. of people active. I dont think one can take any clues from that bcoz the volume will anyway be high no matter what but Volume can be used as a tool to check the strength of something like say a hammer at a support level.
 

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