Question

A spaceship leaves Earth at a high velocity and travels to a distant planet. The observers on Earth state that it took 14 years for them to make the trip. However, the people on the spaceship say it took them 5 years to make the trip.

a) How fast is the spaceship traveling?

b) How far away is the planet according to the Earth observers?

c) Partway during the trip, a small capsule is sent back to Earth at a speed of 0.95c with respect to the spaceship. How fast is the capsule traveling according to the observers on Earth?

Answer #1

A spaceship travels at a constant speed from earth to a planet
orbiting another star. When the spacecraft arrives, 11.76 years
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observers on earth? (c = 3.00 x 108 m/s)
Hint: you can enter the answer in terms of exponent i.e.
5.2e16.

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Erma is an observer on Earth. From Sam's perspective, 1.35 x
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and when Proxima Centauri is near him
First we consider velocity and time: How fast in m/s is Sam
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How fast in m/s is Erma moving...

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In order to cross the galaxy quickly, a spaceship leaves Earth
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sent? (b) How much time elapses on spaceship clocks between when
the ship leaves Earth and when the message is sent? (c) How much
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Twins who are 19.0 years of age leave the earth and travel to a
distant planet 12.0 light-years away. Assume that the planet and
earth are at rest with respect to each other. The twins depart at
the same time on different spaceships. One twin travels at a speed
of 0.912c, and the other twin travels at
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(a) According to the theory of special
relativity, what is the difference between their ages when they
meet again at the earliest...

Twins who are 19.0 years of age leave the earth and travel to a
distant planet 12.0 light-years away. Assume that the planet and
earth are at rest with respect to each other. The twins depart at
the same time on different spaceships. One twin travels at a speed
of 0.853c, and the other twin travels at 0.405c.
(a) According to the theory of special relativity, what is the
difference between their ages when they meet again at the earliest...

An allied spaceship, moving at 0.5 c with respect to Earth,
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An allied spaceship, moving at 0.5 c with respect to Earth,
shoots a photon missile at the speed of light at a revel spaceship,
initially at 6000 km away, which is moving away from the allied
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missile hits the revels 0.1 s after firing. How fast were the
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Twins who are 19.0 years of age leave the earth and travel to a
distant planet 12.0 light-years away. Assume that the planet and
earth are at rest with respect to each other. The twins depart at
the same time on different spaceships. One twin travels at a speed
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(a) According to the theory of special
relativity, what is the difference between their ages when they
meet again at the earliest...

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