Two-Dimensional Perfectly Inelastic Collisions

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SUMMARY

The discussion focuses on calculating the final velocity of a two-dimensional perfectly inelastic collision involving a 25,000 kg truck traveling at 40 m/s and a 10,000 kg van moving at 25 m/s. The truck is on a road angled at 17°, while the van is on a road angled at 60°. Participants express confusion over the appropriate equations for resolving the components of the collision, particularly in the context of kinematics and vector resolution.

PREREQUISITES
  • Understanding of momentum conservation principles in physics
  • Knowledge of vector resolution in two dimensions
  • Familiarity with perfectly inelastic collision equations
  • Basic skills in trigonometry for angle calculations
NEXT STEPS
  • Study the equations for two-dimensional perfectly inelastic collisions
  • Learn how to resolve vectors into x and y components
  • Explore momentum conservation in multi-body collisions
  • Review kinematic equations related to collisions and angle impacts
USEFUL FOR

Physics students, educators, and anyone interested in understanding collision dynamics and momentum conservation in two-dimensional systems.

scoop91
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A 25000 kg truck moving at 40 m/s on a road angled at 17° hits a 10000 kg van moving at 25 m/s on a road angled at 60° at an intersection between two the two roads. Since this is a two-dimensional perfectly inelastic collision, what is the final velocity of the wreck?


Not sure about which equation to use



Attempt at solution: Instantly stuck. Our professor did not give us the equation for two-dimensional perfectly inelastic collision.
 
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Thinking about any 2 dimensional problem such as kinematics, what is usually the first step when dealing with components that are not resolved in x and y directions?
 

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