You must show and explain all work in a neat and organized way to receive credit

Question

You must show and explain all work in a neat and organized way to receive credit. Please show each step for calculations YOU MUST TURNINTHIS SHEET 1. (a) What is the difference between an elastic collision and a completely inelastic collision? (b) Under what conditions is the conservation of momentum applicable? (4 pts) 2. (a) What is the purpose of leveling the track and adding paper clips to the end of the string? (b) In this experiment, what do variables in x1 and x2 stand for? (c) Why might it be necessary to ignore some of the data points just before and just after the collision? (6 pts) 3. For a completely inelastic collision, the fractional change in kinetic energy can be found as a function of the masses of the projectile and target carts only. (a) Show in detail that the fractional change in kinetic energy is given by-= (KEKE KEJ (MM) (b) What is the significance of the negative value for the fractional change in kinetic energy? (10 pts) (m+M)

Explanation / Answer

1)

A) An elastic collision is a collision where the total kinetic energy of the bodies before the collision is equal to their total kinetic energy after the collision. This type of collision is impossible to observe in the macroscopic world, as at least a small amount of kinetic energy is lost during collisions. Note that, if the collision occurs in a closed system, then the total momentum is conserved. The total energy is also conserved—however, some of the kinetic energy has been transformed into other forms.

A collision between two billiard balls are, to a good approximation, elastic. Elastic collisions are more plausible for collisions between fundamental particles. However, even in these interactions, some of the kinetic energy may be lost in the form of radiation.

An inelastic collision is a collision in which the total kinetic energy of the colliding particles before the collision is greater than the total kinetic energy of the particles after the collision. During the impact, the kinetic energy is converted to other forms, such as heat or the energy used to cause deformations in the colliding bodies. A collision is said to be perfectly inelastic if the colliding bodies stick and move together after the collision.

B) Under both condition momentum is conserved.

Related Questions

Navigate

• Browse (All)
• Browse Y
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.