When it comes to upper pecs, the study found that the incline bench is just slightly more effective than the flat or decline bench. The study also tested grips, and found that a narrower grip (just beyond shoulder width) combined with an incline bench press is the best for those upper pecs.
You are currently converting speed units from speed of light to miles per hour. 1 c = 670616629.3844 mph. speed of light. c. miles per hour. 670616629.3844 mph.
A light year is the distance light will travel in one year, a light minute is the distance light will travel in one minute. The speed of light is 299 792 458 metres per second â¦. In one minute light will travel 60 x 299 792 458 = 17 987 547 480 metres.