As a Spaceship Is Moving Toward Earth, an Earthling Measures

question 1

Short Answer

As a spaceship is moving toward Earth, an Earthling measures its length to be 325 m, while the captain on board radios that her spaceship's length is 1150 m. (c = 3.00 × 10⁸ m/s)
(a) How fast is the rocket moving relative to Earth?
(b) What is the TOTAL energy of a 75.0-kg crewman as measured by (i) the captain in the rocket and (ii) the Earthling?

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Definitions:

Relative Abundance

The proportion of a species or specific chemical substances within an ecological community.

Individuals

Distinct entities or beings with unique characteristics, often referring to single human beings or organisms.

Interference Competition

A direct form of competition where organisms physically prevent their rivals from accessing resources.

Exploitative Competition

A form of competition where organisms indirectly interact with each other by consuming scarce resources.