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.
How much faster does sound travels in water than in air? Speed of sound in water is approximately 1500 meters per second. ( The exact speed depends on the depth of water and its density) and the speed of sound in air is approximatelâ¦y 340 meters per second. So sound is almost 4.4 times faster in water than in air.