Anonymous

The speed of light=(3*10^8/10^3) km/s=300000 km/s 4.4 light year=4.4(300000)*365*24*3600 km 80 years=80*365*24 hrs If I go at v km/hr, then 80*365*24v=4.4(300000)*365*24*3600 => v=4.4(300000)*3600/80 => v=59400000 km/hr or v=5.94*10^7 km/hr

Anonymous

4.4 ly = 4.16×10^13 km (kilometers) 80 years = 700800 hours Speed required: 5.936 ×10^7 km/h (kilometers per hour)

Anonymous

At the speed of light, c, it would take 4.4 years. The same distance in 80 years would require a speed of 4.4c = 80v or v = 4.4c/80 = 0.055c. c is about 300000 km/sec, so 0.055c is about 16500 km/sec = 5.9 x 10^7 km/hr