Man Ejects from Car at 50km/hr: Momentum Calculation

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SUMMARY

The discussion focuses on a physics problem involving momentum calculations for a man and his car. The man, with a mass of 80kg, ejects from a car weighing 1600kg while traveling at 150km/hr, just before the car reaches the water. The key calculation involves determining the speed at which the man enters the water after ejecting at 50km/hr. The direction of ejection is noted as a critical factor for accurate momentum analysis.

PREREQUISITES
  • Understanding of basic physics concepts, particularly momentum and velocity.
  • Familiarity with the equations of motion in physics.
  • Knowledge of unit conversions, specifically between kilometers per hour and other speed units.
  • Ability to analyze vector components in motion.
NEXT STEPS
  • Study the principles of momentum conservation in physics.
  • Learn about projectile motion and its calculations.
  • Explore the effects of different ejection angles on landing speed.
  • Review unit conversion techniques for speed measurements.
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding momentum and motion dynamics in real-world scenarios.

whitestrat69
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Homework Statement


A man (mass 80kg) reaches the edge of a 20m cliff in his car (mass 1600kg) at a speed of 150km/hr. He drives off the edge without a change in velocity.

Calculate the speed at which he enters the water if he ejects from his car at 50km/yr just as the car reaches the water?
 
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Show what you've done so far.

Also, the direction of ejection is not mentioned. That is crucial.
 
Hmm...kilometres per year is an interesting unit.
 

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