From Matthew Sherman,
Your Guide to Pool / Billiards.
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My weight is all on my front foot as I rise up with the force of the hit. Like a boxer, golfer, tennis player, etc. it will be easiest to pass forward motion along the line of ball travel with the front of my body leading.

Set into your pool stance without any equipment in your hands. Punch forward into the air with a fist, leaning on your front foot. Now repeat the punch leaning more on the back foot this time. See the difference in how much power is wasted?

To maintain an accurate hit on the head object ball, in this case the 1-ball, I've kept my main thought “keep the shooting hand out in front of my body”. My right fist and arm are always moving forward at speed toward the target throughout the stroke.