1. The problem statement, all variables and given/known data 1. Velma passes Mort at a speed of 0.75c. At this speed, the "time dilation factor" is 1.5. In other words, Mort observes a 1-second tick of Velma's clock to take 1.5 seconds. Suppose that they are born at the same time, and that Mort observes himself to live 30 years. As Mort dies, how old will he observe Velma to be? A.) 45 years B.) 30 years C.) 20 years D.) 10 years E.) 40 years 2. Suppose that you are inside a smooth-flying [no bumps] jet plane that is speeding up along a straight line. Can you detect this acceleration without directly or indirectly making use of anything outside of your own reference frame? If so, how could you observe this; and if not, why not? A.) No, because of the principle of relativity. B.) No, because of the principle of the constancy of lightspeed. C.) No, because jet planes move far too slowly for such an effect to actually be observed. D.) Yes. For example, if you dropped a coin you would find that it lands to the front of the drop point. E.) Yes. For example, if you dropped a coin you would find that it lands to the rear of the drop point. 2. Relevant equations 3. The attempt at a solution 1. (C) -I'm not exactly sure why.... 2. (D) -Just makes sense to me.... Thank you!