1. 1/18/11 Day 7 TOPIC: Conservation of Momentum Lab
OBJECTIVE: I will calculate momentum before and after an elastic collision
STARTER: Categorize the elastic and inelastic collisions.

2. Conservation of Momentum Lab
The total momentum of a system before a collision is equal to the total momentum after a collision.

3. Lab Set up
Observe: Observe the track, rubber bands, masses, timer & timer settings, etc.
Experimental Question: is the total momentum of the system before the collision the same after the elastic collision?
Hypothesis: If the elastic collision occurs …then the momentum of the collision before is equal to the momentum after...

4. Lab Set up Procedure:… Photogate A is closest to the launch car!
Make sure target car is at photogate B

5. Table I : Collision Data
Mass Of
Target
Car
(kg)
Rolling
Rolling car
Before collision
Rolling car after collision
Target car after collision
Photo
Gate
(s)
Speed
(m/s)
.01/s
.102(2)
.084(1)
.056(0)

6. Masses Empty Car .056 Kg Car + 1 .084Kg Car + 2 .102Kg Car + 3 .130Kg
Marble =
.028Kg