SHOW YOUR COMPLETE SOLUTION AND WRITE YOUR SOLUTION ON A PAPER. Multiple Choice (2 pts each). Write the CAPITAL LETTER of the correct answer. Show your solution for items involving problem solving. Ignore air resistance and assume acceleration due to gravity on the surface of the earth is 9.8 m/s2.17. You throw a coin vertically upward and catch it 2.5 seconds later from the same level you threw it. What is the initial velocity of the coin? a. 2.5 m/s b. 12.3 m/s c. 24.5 m/s d. None of the above 18. A ball was kicked with an initial velocity of 37 m/s, 60 above the ground. How long was it airborne? a. 3.3 s b. 27 s c. 6.5 s d. 32 s e. None of the above 19. Which of the following statement is/are true about an object in uniform circular motion? I The acceleration is always perpendicular to the velocity. II The velocity is constant. III The acceleration is always directed towards the center of the circle. IV The magnitude of the acceleration is constant. a. I and II only b. I and IV only c. I, II, and III only d. I, III, and IV only e. None of the above 20.A toy motorcycle travels a circular path with radius R with speed v and centripetal acceleration magnitude a. Which of the following combination of speed and radius will result in a centripetal acceleration with magnitude 4a? a. 2v and 2R b. v and R c. 2v and R d. 1/2 v and 2R