Relativity & Cosmology Problem No. 3

Problem No. 3 (Relativity & Cosmology) A meterstick moving at relative to the Earth’s surface approaches an observer at rest with respect to the Earth’s surface. (a) What is the meterstick’s length as measured by the observer? (b) Qualitatively, how would the answer to part (a) change if the observer started running toward the meterstick? Reference PHYSICS for Scientists and Engineers with Modern Physics Raymond A. Serway John W. Jewett, Jr. Cengage 9th Edition (2014) Ch. No. 39 (Relativity) Exercise No. 39.6