Pd. 3: Announcements
WarmUp: Compare the amount of force required to stop a 75 kg moving passenger in a vehicle moving at residential speed (11 m/s) by an airbag vs. by the dashboard.
The airbag brings the passenger to a stop in 0.75 s.
The dashboard brings that same person to a stop in 0.026 s
Learning Goal: Understand conservation of momentum
Today:
WarmUp: Compare the amount of force required to stop a 75 kg moving passenger in a vehicle moving at residential speed (11 m/s) by an airbag vs. by the dashboard.
The airbag brings the passenger to a stop in 0.75 s.
The dashboard brings that same person to a stop in 0.026 s
Learning Goal: Understand conservation of momentum
Today:
- Discuss conservation of momentum
- p. 224, #15-23. Show all GUESSwork where appropriate.