Full impulse equals the speed of light and Warp 1. Thatīs why nobody flies at Warp 1, itīs not efficient. Obviously in STO the speed of full impulse is depending on your engine type. And i hope km does not mean kilometers, wasnīt the range of a photon torpedo like 2 million kilometers in the TNG era ?
Um no. Full Impulse isn't speed of light. That is warp one. Full Impulse speeds have gone up over the course of the 23/24 centuries. Full Impulse during the ST:TMP was roughly 33 PSL (Percent the Speed of Light). By the time of Voyager Full Impulse was 80 PSL. (Voyager ep. "Timeless").
I believe when you see 10.0 km that its a place holder. They are always dealing with enormous distances in space so it would be clearer and easier to read and computer is 10,000 km read as 10km or something to that effect
Yeah, it's probably just dumbed down so the officers can read it faster.
Unless you need a very specific reading, 10kk is much faster than reading 10,283km.
Just like how the Prometheus class weighs almost 4 billion pounds, they're not going to want to know the weight in pounds, but more like metric tons in millions. AKA, 1.7 million metric tons. 1.7 MMT.
The Enterprise -D can fire a Phaser with roughly 1,400,000,000,000,000 watts, but do they really set the strength using that scale? Nah, 1.4 petawatts is good.