A space probe has an 15.6-m length when measured at rest.What length does an observer at rest measure when the probe is going by at a speed of 0.740 c?
A) 23.2 m
B) 10.5 m
C) 8.0 m
D) 11.5 m
E) 21.1 m

Question

A space probe has an 15.6-m length when measured at rest.What length does an observer at rest measure when the probe is going by at a speed of 0.740 c?
A) 23.2 m
B) 10.5 m
C) 8.0 m
D) 11.5 m
E) ​21.1 m

Quizplus · Accepted Answer

The length contraction formula is L = L₀√(1-v²/c²), where L₀ is the rest length, v is the velocity, and c is the speed of light. Plugging in the values: L = 15.6√(1-(0.740)²) = 10.5 m.

A Space Probe Has an 15