Procedure – Perfectly Inelastic Collisions1. Weigh the glider attachments and modify the gliders as stated below • Weigh the “needle” and wax plug separately. Enter the masses into your notebook. • Remove the rubber band bumper from the glider and replace it with the needle placed in a lowerhole on one end. • On the other glider, remove the metal tab and replace it with the wax filled plug, in the lower hole on one end. • Place both gliders on the air track with needle pointing at the wax filled plug. 2. Prepare a table in your notebook to record measurements. Something like ... m1(kg) m2v1i(m/s) v2ivfPiPfΔPKiKfΔK3. Make measurements[1.5]• Perform one collision for each of the four cases below. For each collision record the velocities. After the gliders collide and stick together, they will travel as a pair through photogate #1 or #2. The computer will display two values for “Velocity”, because the photogate is blocked twiceduring the passage of the glider pair. Record the average of these speeds for the value of vf. Don’t forget to record the correct sign for the velocity. After measuring the velocities, calculate the momenta and kinetic energies: Case 1:One glider initially at rest, the other glider moving; neither glider has added mass. Case 2:One glider initially at rest with 100 grams added mass, the other glider moving with no added mass. Case 3:Both gliders in motion, one with 100 grams added mass, the other with no added mass. Case 4:Both gliders in motion, neither with added mass. Increase the initial velocity of one glider by increasing the tension in the rubber band of one launcher. 4. Questions [2.0] • Is momentum conserved? How accurately can you verify it with these measurements?• How much kinetic energy is lost in the inelastic collisions• ?