Conservation of Linear Momentum, Collisions

 

Conservation of Momentum

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Summary of work/energy; momentum defined, with equation (p = m*v); conservation of momentum.

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Definition of momentum (p = m*v) and impulse; non-constant force and impulse; conservation of momentum; translational motion of the center of mass; modeling external forces and conservation of momentum; modeling of instantaneous collisions; momentum diagrams and equations.

Two people jumping off a railway flatcar.

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Elastic Collisions

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Collision of two hockey pucks.

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Ballistic Pendulum

Measuring the speed of a bullet by shooting a block suspended by two cables.

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Momentum

Definition of momentum (p = m*v); Newton's laws and momentum; law of conservation of momentum of a particle and of a system of particles, with examples; relationship between forces and momentum; elastic and inelastic collision, with examples.

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Center of Mass Motion

Center of mass of an area of constant thickness, with examples; motion of the center of mass; internal and external forces, with examples; energy of a system of particles; variable mass motion, with rocket example.

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Variable Mass Example

Variable mass motion example problem.

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Impulse and Collisions

Definition of impulsive force, with example; elastic and inelastic collisions, with examples in one-dimension and two-dimensions.

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Collisions

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Two-dimension elastic collisions, with example; ballistic pendulum; definition and properties of collisions; collisions and kinetic energy in center of mass frame of reference.

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General problem-solving strategy, techniques, and helpful hints; momentum formulas.

Elastic and inelastic collisions. Solution not included.

Short answer questions about elastic and inelastic collisions.

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Concept questions about elastic and inelastic collisions between two or more bodies; some questions involve mass-spring systems.

Collision of a moving body with a stationary body attached to a spring.

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Momentum and Energy

Conservation of momentum and energy; collisions.

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Collision Theory

Momentum and impulse equations; definition of conservation of momentum for an isolated system; momentum problem solving strategies; momentum diagram and equations; planar collision theory; elastic collisions; 2D elastic collision example problem.

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Experiment 7

Momentum and collision experiment setup and procedure.

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Linear Momentum Review

Momentum and change of momentum defined, with equations; strategies for solving momentum and impulse problems; collisions and conservation of momentum; center of mass.

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Energy and Momentum

Friction and acceleration; which forces must be known to solve for energy and momentum; kinetic energy and momentum in a collision. Solution not included.

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Kinetic Energy and Momentum

Changes in momentum and kinetic energy of two objects. Solution not included.

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Simple Harmonic Motion

Momentum and kinetic energy of a baseball bat; simple harmonic motion of two mass-spring systems. Solution not included.

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Momentum and Mechanical Energy

Inelastic collision of two bodies.

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Exploding Projectile

Elastic collision of two bodies, including projectile motion.

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Bouncing Superballs

Elastic collision of two bodies.

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Elastic One Dimensional Collision

Elastic collision of two carts on a track.

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Pendulums and Collisions

Elastic and inelastic collisions between a pendulum bob and an object.

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Momentum of Isolated Systems

Concept questions about conservation of momentum in isolated systems of one or more bodies.

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Experiment 7 Pre-Lab

Concept questions regarding collisions of carts on a frictionless track.

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Inelastic Collision with an Oscillating Mass

Motion of an oscillating mass on a spring, before and after colliding with a lump of putty.

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Two Dimensional Elastic Collision

Motion of two objects that collide elastically.

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Experiment 7 Analysis

Analysis of data collected in Experiment 7.

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Experiment 9 Analysis

Analysis of data collected in Experiment 9.

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Skewed Collision

4-part problem; two balls collide at angle; finding momentum, speed before and after, and velocity of center of mass. Solutions are included after problems.

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2D Collision

Finding resultant velocity and kinetic energy for 2D collision; elastic vs. inelastic collision. Solutions are included after problems.

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Glancing Collision

Straight rod brushes against fixed object; finding ω, kinetic energy, speeds of both ends after collision. Solutions are included after problems.

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Linear Collision

Motion of two steel balls following a linear collision.

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Collision of a Ball and a Block

Motion of a moving ball colliding with a stationary block.

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Collision with Mass on a Spring

Inelastic collision of a clay ball with a block connected to a spring.

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Momentum in Explosion (8.01X, Fall 2002)

Final speed and lost kinetic energy in explosion into two pieces.

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Elastic Collision (8.01X, Fall 2002)

Calculating final and initial speed of one object in collision, as well as the mass ratio.

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Inelastic Collision with a Spring (8.01X, Fall 2002)

For inelastic collision, finding initial and final velocities and pendulum attributes.

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Impulse for a Bouncing Ball (8.01X, Fall 2002)

6-part problem; p of ball before and after hitting floor; average force and impulse; change in kinetic energy.

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Center of Mass Reference Frame

Elastic collision of two rolling carts with respect to reference frame moving with the center of mass.

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Exploding Puck

Conservation of momentum of an exploding puck.

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Conservation of Energy and Momentum

Collision of a body with another body connected to a spring.

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Block and Spring

Inelastic collision involving an oscillating mass attached to a spring.

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