7. Jed Dye, a 138kg man, is walking into the grocery store with a velocity of 5.6m/s. He does not realize the 220kg glass door is not open and runs right into it. He bounces off the glass with a velocity of 3.2m/s, what is the recoil velocity of the glass door? 4 pts co Tish Hughes, a 67 kg student, is late for class and running down the hall with a velocity of 9.7 m/s. She collides with an unsuspecting 98 kg teacher who is walking the other direction. After the collision, Tish is traveling at 2 m/s in the direction she came from and the teacher flies backwards at 7.56 m/s. What was the teacher's initial velocity before the crash? 4 pts 9. A toy race car with a mass 0.097 kg moves west with a velocity of 0.34 m/s and hits a toy truck moving east with a velocity of 0.45 m/s. They stick together after colliding and move with a velocity of 0.23 m/s. What is the mass of the truck? 4 pts