Air track
10
-
This demonstrates that the momentum is conserved:
𝑝
0
⃗⃗⃗⃗⃗ = 𝑝
1
⃗⃗⃗⃗⃗ + 𝑝
2
⃗⃗⃗⃗⃗
-
In addition, as the kinetic energy is conserved:
𝐸
𝑐
=
1
2
∗ 𝑚 ∗ 𝑣²
1
2
∗ 𝑚 ∗ 𝑣
0
² =
1
2
∗ 𝑚 ∗ 𝑣
1
² +
1
2
∗ 𝑚 ∗ 𝑣
2
²
This gives:
𝑣
1
= 𝑣
0
∗
𝑚
1
− 𝑚
2
𝑚
1
+ 𝑚
2
𝑒𝑡 𝑣
2
= 𝑣
0
∗
2 ∗ 𝑚
1
𝑚
1
+ 𝑚
2
