Short Response Directions: Answer the following 7 questions as clearly as you can. No answer should require more than 2 sentences or a few lines of calculations. Each question is worth 1 point and all 7 questions are worth 50% of the exam. 1. If I drop my phone on a stone floor, the screen will likely crack. However, if I drop my phone from the same height but onto a pillow, it will likely be undamaged. Use the Impulse- Momentum Theorem to explain very briefly and precisely how the pillow changes the nature of the phone's collision so that it is undamaged. 2. Is it possible to have a zero kinetic energy but a non-zero net force? Briefly explain your answer. 3. Describe the overall behavior of the kinetic energy values of an object tossed straight up into the air and allowed to land higher than from where it was tossed. 4. In the derivation of the formula for escape velocity, we had to consider the object in question travelling infinitely far away from the source of gravity. What happens at infinity? For questions 5 & 6, consider a universe in which p = = 5. Qualitatively, how would motion be different in such a universe? 6. What would Newton's Second Law look like in such a universe? 7. The International Space Station has an orbital period of about 90 minutes. How high abovethe surface of the earth does it orbit