Pre-lab exercise 1. A glider of length L and mass M takes a time T to pass a poi

Question

Pre-lab exercise

1. A glider of length L and mass M takes a time T to pass a point on the air-track. What is the momentum of the glider in terms of these quantities?

2. What is the kinetic energy of the glider in terms of these quantities?

3. A glider of mass M moves with speed vi on an airtrack. It collides with another glider of equal mass initially at rest. They stick together and move as a unit. If momentum is conserved, what is the final kinetic energy of the system, in terms of M and vi ? What percentage of the system

Pre-lab exercise The lab asks you to design and carry out measurements that will allow you to determine the momentum, K = 1/2mv^2 of gliders on an air-track before and after the gliders collide. 1. A glider of length L and mass M takes a time T to pass a point on the air-track. What is the momentum of the glider in terms of these quantities? 2. What is the kinetic energy of the glider in terms of these quantities? 3. A glider of mass M moves with speed vi on an airtrack. It collides with another glider of equal mass initially at rest. They stick together and move as a unit. If momentum is conserved, what is the final kinetic energy of the system, in terms of M and vi ? What percentage of the system??s original kinetic energy was lost? P = mv , and kinetic energy,

Explanation / Answer

1) Momentum = mass * velocity = M * L/T

(2) K.E = 1/2 M * v ^2 = 1/2 * M *(L/T)2

(3) the case is of perfectly inelastic collision as the particles are sticking together as a single unit.

final velocity is given by =( M1v1 + m2v2)/ (m1 + m2)

here m1 = m2 =M and v1 = v2 = vi

therefore v final = vi

final kinetic energy = 1/2 * M * vi^2

zero percent is lost i.e. total conservation of K.E.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

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