Inelastic Collisions. On the menu to the right, slide the indicator all the way to the left to ensure perfectly inelastic collision. Ball Mass (kg) Before the Collision After the Collision v (m/s) Momentum (kg.m/s) v (m/s) Momentum (kg.m/s) 1 3.00 2.40 7.20 1.34 4.03 2 0.50 -1.30 -0.65 5.04 2.52 Question: In the last trial, is the kinetic energy conserved? Show the calculations for the sum of the initial kinetic energy of mass 1 and mass 2 and compare it with the sum of the final kinetic energy of mass 1 and mass 2.
Inelastic Collisions. On the menu to the right, slide the indicator all the way to the left to ensure perfectly inelastic collision.
|
Ball |
Mass (kg) |
Before the Collision
|
After the Collision
|
||
|
|
|
v (m/s) |
Momentum (kg.m/s) |
v (m/s) |
Momentum (kg.m/s) |
|
1 |
3.00 |
2.40 |
7.20 |
1.34 |
4.03 |
|
2 |
0.50 |
-1.30 |
-0.65 |
5.04 |
2.52 |
Question: In the last trial, is the kinetic energy conserved? Show the calculations for the sum of the initial kinetic energy of mass 1 and mass 2 and compare it with the sum of the final kinetic energy of mass 1 and mass 2.
The problem is based on conservation of kinetic energy. To solve the given question we will calculate the sum of initial kinetic energy and the sum of final kinetic energy of the system, hence by analyzing them we will calculate the answer.
Given Data
Mass of first ball=3.00 kg
Mass of the second ball=0.50 kg
Initial velocity of the first ball=2.40 m/s
Initial momentum of the first ball=7.20 kg.m/s
Initial velocity of the second ball=-1.30 m/s
Initial momentum of the second ball=-0.65 kg.m/s
Final velocity of the first ball=1.34 m/s
Final momentum of the first ball=4.03 kg.m/s
Final velocity of the second ball=5.04 m/s
Final momentum of the second ball=2.52 kg.m/s
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