1. PHY221 Ch11: Conservation of Momentum

2. 1. Main Points Proof:

3. PHY221 Ch11: Conservation of Momentum Questions

4. PHY221 Ch11: Conservation of Momentum 2. Discuss CM frame (needs Fext=0 otherwise not inertial) In CM frame total momentum is zero. Proof:

5. PHY221 Ch11: Conservation of Momentum 2. Discuss Ineslastic collision def: masses have same final velocity. Solve for final velocity, given initial velocities: v 1i v 2i vfvf

6. PHY221 Ch11: Conservation of Momentum Cars collision: 2 cars travelling, one East the other west, collide (not necessarily inelastic): A collision conserves momentum. What are the possible outcome of the collision of 2 objects (initial momenta along x-axis)? Questions

7. PHY221 Ch11: Conservation of Momentum Work out Ballistic pendulum: bullet travelling horizontally embeds itself in a block of wood of mass M attached to an arm of length l which is measured to swing out to a max angle  from vertical. Find initial velocity of bullet. Questions