Final answer:
The provided questions explore concepts such as recoil velocity, average force, and conservation of momentum in various physical scenarios, from firearms to billiard balls.
Step-by-step explanation:
The exercise involves the calculation of various parameters related to the motion and interaction of objects per the laws of physics. Specifically, we are looking at situations to do with the conservation of momentum, impulse, kinetic energy, acceleration, and forces exerted on objects. Here are examples from the provided information:
- Recoil velocity calculation of a gun plunger using the conservation of linear momentum.
- Determination of the average force exerted on a gun plunger using the work-energy theorem.
- Comparison of forces exerted on a gun in different circumstances using the impulse-momentum theorem.