Imagine yourself as an astronaut being paid according to the time you spend traveling in space. You take a long voyage traveling at a speed near that of light. Upon your return to Earth, you’re asked how you’d like to be paid: To maximize your paycheck, which clock should you choose? Group of answer choices Either of the clocks should indicate the same time It's hard to decide as the spaceship's speed is to be mentioned specifically in the problem. According to the time elapsed on the spaceship's clock According to the time elapsed on a clock on Earth

A star is 16.6 light-years from Earth. Part A How long would it take a spacecraft traveling 0.950c to reach that star as measured by observer on Earth? tEarth 17.5 years Submit ✓ Correct Correct answer is shown. Your answer 17.47 years was either rounded differently or used a different number of significant figures than required for this part. Part B How long would it take a spacecraft traveling 0.950c to reach that star as measured by observer on the spacecraft? t = 5.46 years Submit Part C Previous Answers Correct What is the distance traveled according to observers on the spacecraft? 15.18 light-years Previous Answers Submit Previous Answers Part D V = Correct What will the spacecraft occupants compute their speed to be from the results of part B and part C? 3.29 IVE ΑΣΦ Submit Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining •C

The nearest star to Earth is Proxima Centauri, 4.2 light-years away. Part A At what constant velocity must a spacecraft travel from Earth if it is to reach the star in 3.6 years, as measured by travelers on the spacecraft? Express your answer using two significant figures. IVE ΑΣΦ v= 0.805 Submit Part B X Incorrect; Try Again; 2 attempts remaining Previous Answers Request Answer How long does the trip take according to Earth observers? Express your answer using two significant figures. D ΠΫΠΙ ΑΣΦ t = 5.2 Submit ? Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining C years

A particle travels at 0.60c. Determine the ratio of its kinetic energy to its rest energy.A) 0.25B) 0.50C) 0.60D) 0.64E) 0.80