The decline bench press gives you have a limited range of motion. You can use more weight because of both mechanical advantage and less total work being performed. By only bringing the bar down to your lower chest, you severely limit the distance you move the bar.
The time difference that you sense is due to the way sound and light travel. Light travels extremely fast (300,000,000 m/s). In fact, it is faster than anything else. Sound travels at a measly 343 m/s through air. Therefore we can see light in an instant, but it takes a while to hear thunder. Sound has another disadvantage because it tends to bounce off molecules in the air. This makes the sound travel in all different directions.
According to scientist Bruce Steo, lightning moves at variable speeds. Lightning is in fact not light. But as the electronic plasma moves through charged air, it releases light waves. Depending on air conditions, the typical lightning bolt moves at 224,000 mph -- or about 3,700 miles per second.However, the light you see from the lightning obviously travels at the speed of light, which is roughly 670 million mph, or 186,000 miles per second.hich travels faster lightning or sound? Lightening travels at the speed of light, which is about 165,000 miles per hour, whereas sound, such as thunder, travels at the speed of sound in dry air, is approximately 1,1 â¦ 27 feet per second or 768 mph (1,236 km/h) at 68Â°F (20 Â°C). Look in Wikipedia, under Thunder.