Question

Suppose you wanted to reach Alpha Centauri (4.4 ly from the Solar system) in 170 years. How fast would you have to go, in km/hr? Express your answer in kilometers per hour to two significant figures. V AED 3) ? V= km/hr Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B How many times faster is the speed you found in part A than the speeds of our fastest current spacecraft (around 50000 km/hr)? Express your answer using two significant figures. Vo Ao ? Vcurrent

Answer 1

15 1 1 ly = 9.461x10m - 9.461 X10 Im. .. Distance: 4.4 ly: 4.479.461x102= 4.16 x16?? Icm. time = 170 years = 170x 365* 24. = 1489200 hrs. A 13 4.16x 10 .: Speed distance time = 27934461.46 km/ho 1989200 H ie Speed - 2.8 x 10t krilho B 2.8x10 V V current 560 4 5x10