. The average student should be able to complete this quiz in 15-45 minutes. However, there is no time limit other than the due date/time. nts D Question 1 1 pts A collision is elastic only when kinetic energy and momentum are conserved through the collision. True False D Question 2 2 pts To analyze the intermediate states of a projectile's motion in a ballistic pendulum system, like the experiment conducted in class, Conservation of Energy and/ or Conservation of Momentum is used. You had to choose which equation correctly applied given the conditions of the situation. In which case below can you NOT use Conservation of Momentum. Hint: In which of the situations stated below would momentum not be conserved. Net external forces do not equal zero (There exists a net external force) Net external forces equal zero (There is no net external force) D Question 3 4 pts A 5 g projectile is shot into a 25 g pendulum bob at an initial velocity of 3.5 m/s. The pendulum swings up to an final angle of 30 deg. Find the length of the pendulum to its center of mass ROM (your answer should be in meters to three decimal place precision). Assume g = 9.81 m/s^2. Use the below equations: " T" ) * 2 * g * Ah Ah = Ron * (1 - cos(0)) D Question 4 1 pts An object is launched horizontally off a 30 m high building so that it lands 121 m away from its initial location. Do you need to know the mass of the projectile to find the initial velocity of the projectile? Assume negligible air resistance. O No Yes D Question 5 2 pts A projectile is shot at 4.5 m/s off a 301 m high cliff. How far does the projectile travel horizontally (your answer should be in meters to one decimal place precision)? Assume g=9.81 m/s^2. Use the below equation: U1 = I * 1