please help: When parked, your car is 6.4 m long. Unfortunately, your garage is only 3.7 m long. A) How fast would your car have to be moving for an observer on the ground to find your car shorter than your garage?         Express your answer as a multiple of c.   B)  When you are driving at this speed, how long is your garage, as measured in the car's frame of reference?         Express your answer in meters.

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter39: Relativity
Section: Chapter Questions
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please help:

When parked, your car is 6.4 m long. Unfortunately, your garage is only 3.7 m long.

A) How fast would your car have to be moving for an observer on the ground to find your car shorter than your garage?        
Express your answer as a multiple of c.
 
B) 
When you are driving at this speed, how long is your garage, as measured in the car's frame of reference?        
Express your answer in meters.
 
 
 
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