A Rocket Speeding by the Earth Is Roughly Cylindrical in Shape

question 32

Multiple Choice

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.