Question

17. If a meter stick was traveling at 42% of the speed of light, it would...

17. If a meter stick was traveling at 42% of the speed of light, it would

Group of answer choices

actually get shorter in the direction of its motion

appear shorter to an observer moving with the stick

appear shorter to a stationary observer

appear longer to a stationary observer

  1. How fast would a meter stick have to travel to make it appear only 20 cm long to a stationary observer?

Group of answer choices

0.96c

0.97c

0.98c

0.99c

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Homework Answers

Answer #1

(a) speed of the meter stick,

c is the speed of light

lenth of the stick,

Lorentz factor is,

therefore, the stick will appear shorter to the stationary observer

(b)

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