PART D: MAKING CONNECTIONS (10 MARKS) Answer the following questions on a separate sheet of paper. {3} 1. Distinguish between an inertial and a non-inertial frame of reference. How do we account for some unexpected motions that occur in non-inertial frames? {3} 2. Describe the signicance of the Michelson-Morley experiment. {2} 3. Describe the changes you would note in your watch, your volume, and your mass if you were travelling in a spaceship at nearly the speed of light. {2} 4. What changes would an observer on Earth note in the spaceship mentioned in question 3 above? {2} 5. Why is it impossible to measure the length contraction of a moving spacecraft from within the craft