Increase distance speed quickly?

I have always had a slow to medium back swing, but my down swing gets fast. I dont like this. my back swing is medium speed then fast down swing, then i end up "coming up on my shot," not staying down on it. I'm trying to have a solid, fast...

I know for sure that the speed of both primary and secondary waves both speed up with distance from the epicenter of an earthquake, as shown here; http://www.regentsearthscience.com/tsunami/pands.gif but why?

I jogg about 4.4 miles every day in roughly 30 minutes. But I never feel 'worked out' or fatigued afterwards. Should I try to increase my speed, or should I keep at my pace ...show more

I want to be able to increase my speed to 60 70 80 90 100

if i cycle 5km at 20km/h do i use more energy then if i do the same distance at 10km/h

I'm a distance runner, I run anywhere from the 800m to a 5k. I naturally have a TON of endurance (I ran my first 5k when I was twelve at a sub-7 minute pace, after never having ...show more