A Rocket Speeding by the Earth Is Roughly Cylindrical in Shape

A rocket speeding by the Earth is roughly cylindrical in shape and oriented such that its axis is parallel to its velocity. At rest, it is measured to have a radius of 15 m and a length of 150 m. When speeding by, its volume is measured to be 4.24 × 10⁴ m³. What is its speed?

A) 0.917 c
B) 0.774 c
C) 0.678 c
D) Insufficient information is given.

Correct Answer:

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