A starship voyages to a distant planet 10 ly away. The explorers stay 1 yr, return at the same speed, and arrive back on earth 26 yr after they left. Assume that the time needed to accelerate and decelerate is negligible.a. What is the speed of the starship?b. How much time has elapsed on the astronauts’ chronometers?

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Q: 2.) An occupant on a high-speed spaceship traveling between Earth and Mars at a steady speed of…

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Q: what will be the velocity of light as seen by an observer at rest?

A: according to Galileo's classical view of relativity light is treated as all other things.

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A: Ans:- Image-1

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Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.