Question

Nani and David are each in a rocket. They are approaching Earth from opposite sides at...

Nani and David are each in a rocket. They are approaching Earth from opposite sides at a speed of 0.875c. They each measure their own rocket to be 150 m long.

a. How long does Bubbles, who is one Earth, measure the rockets to be?

b. What is the relative speed of Nani’s rocket to David’s rocket?

c. How long does Nani measure David’s rocket to be?

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Answer #1

A)

Length contraction is the phenomenon that a moving object's length is measured to be shorter than its proper length

B) The velocity is c (speed of light)

In a relative moving, when two objects move in front of each other, the velocity that one sees with respect to the other is the own speed plus that of the other object. But there is a limit, the velocity of the light.

No speed is greater than the speed of light.

Fermin Dalmagro

C)

As long as that David see the rocket of Nani. Taking 0.99c, the long is:

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