Question: A clock ticks once each second and is 10 cm long when at rest. If the clock is moving at 0.80c parallel to its length

A clock ticks once each second and is 10 cm long when at rest. If the clock is moving at 0.80c parallel to its length with respect to an observer, the observer measures the time between ticks to be _____ and the length of the clock to be _____.

(a) More than 1 s; more than 10 cm
(b) Less than 1 s; more than 10 cm
(c) More than 1 s; less than 10 cm
(d) Less than 1 s; less than 10 cm
(e) Equal to 1 s; equal to 10 cm

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