50/10 = 5 hours = 18,000 seconds
3600 mph.
65 mph = 95.3 feet per second.
Very slow if it is 95.333 nanometres per second, fast if it is 95.333 kilometres per second.
3,600 miles.
9.32 seconds.
45 seconds
I'm going to guess that you mean, "How fast will the bullet from a .45 caliber pistol travel?" If so, the bullets travel between about 800 feet per second and 1100 feet per second, depending on various factors.
1000/25 = 40 seconds
Simply multiplication - 1.25km !
About 245.45 miles per hour at 360ft/s
9.5333 feet
245 ft in 2.59 seconds = 94.595 ft per second