A 63-kg student stands on a 34-kg cart that is free to move

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SUMMARY

The discussion centers on a physics problem involving a 63-kg student and a 34-kg cart, initially moving together at a velocity of 3.2 m/s west. When the student walks at a velocity of 1.8 m/s at an angle of 25° west of north, the problem requires calculating the new velocity of the cart. The conservation of momentum principle, expressed as p=mv, is essential for solving this problem, as it allows for the determination of the cart's new velocity after the student begins to walk.

PREREQUISITES
  • Understanding of momentum conservation principles
  • Knowledge of vector addition and decomposition
  • Familiarity with basic physics equations, specifically p=mv
  • Ability to perform calculations involving angles and directional velocities
NEXT STEPS
  • Study the conservation of momentum in two-dimensional systems
  • Learn about vector decomposition and how to resolve velocities into components
  • Practice problems involving moving objects with varying velocities
  • Explore the effects of external forces on momentum in closed systems
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This discussion is beneficial for physics students, educators, and anyone interested in understanding momentum and motion dynamics in multi-body systems.

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Homework Statement


A 63-kg student stands on a 34-kg cart that is free to move in any direction. The cart and student are moving together with a velocity of 3.2 m/s [W]. The student then starts to walk so that her velocity is 1.8 m/s [25° W of N] relative to the floor. Calculate the new velocity of the cart.


Homework Equations


p=mv


The Attempt at a Solution


i don't know what is going on
 

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jasonbans said:

Homework Statement


A 63-kg student stands on a 34-kg cart that is free to move in any direction. The cart and student are moving together with a velocity of 3.2 m/s [W]. The student then starts to walk so that her velocity is 1.8 m/s [25° W of N] relative to the floor. Calculate the new velocity of the cart.


Homework Equations


p=mv


The Attempt at a Solution


i don't know what is going on

why is the direction point to 25 degrees E of S
 

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