# Elastic Collisions - Page 5

Questions

- A ball with a mass of # 6 kg# is rolling at #16 m/s# and elastically collides with a resting ball with a mass of # 1 kg#. What are the post-collision velocities of the balls?
- A ball with a mass of # 3 kg# is rolling at #6 m/s# and elastically collides with a resting ball with a mass of # 8 kg#. What are the post-collision velocities of the balls?
- A ball with a mass of # 3 kg# is rolling at #25 m/s# and elastically collides with a resting ball with a mass of # 2 kg#. What are the post-collision velocities of the balls?
- A ball with a mass of # 6 kg# is rolling at #6 m/s# and elastically collides with a resting ball with a mass of # 8 kg#. What are the post-collision velocities of the balls?
- Why is it difficult to use the law of conservation of energy to calculate the effects of a collision?
- Momentum ?
- Calculate the velocity of an elastic collision?
- A 15 kg object moving to the right a 22.5 m/s makes an elastic head on collision with a 30 kg object moving to the left at 18 m/s. After the collision the smaller object 15 kg object moves to the left at 31.5 m/s. What is the velocity of the 30 kg marble?
- The first ball of mass m moving witha velocity u collides head on with the second ball of mass m at rest.If the coefficient of restitution is e,then what is the ratio of the velocities of the first and the second ball after the collision?
- How does the mass of the object at rest (box or cup) affect how far it travels when hit by the metal ball?
- A particle of mass #m# moving with speed #v# hits elastically another stationary particle of mass #2m# inside a smooth horizontal circular tube of radius #r#. The time after which the second collision will happen?
- A billiard ball of mass .155 kg moves with a velocity of 12.5 m/s toward a stationary billiard ball of identical mass and strikes it in a head on collision. The first billiard ball comes to a complete stop. Was the collision elastic?
- If one cart was at rest, and was struck by another cart of equal mass, what would the final velocities be for a perfectly elastic collision? For a perfectly inelastic collision?
- The manufacturer of a bulletproof vest wants the vest to be able to stop a bullet with a mass of 0.4 kg and a velocity of 1800 m/s. What is the momentum of this bullet?