Kinematics Problem Homework Help

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SUMMARY

The discussion centers on solving a kinematics problem involving a car's journey of 99 km, where it travels the first 49.5 km at a speed of 38 km/h. To achieve an average speed of 47 km/h over the entire distance, the required speed for the second half of the journey must be calculated. The equation 47 = 0.5(38 + x) is proposed, emphasizing the importance of considering time in the solution. Participants highlight the need for more detailed information to provide accurate assistance.

PREREQUISITES
  • Understanding of average speed calculations
  • Familiarity with kinematic equations
  • Basic algebra skills for solving equations
  • Knowledge of time-distance-speed relationships
NEXT STEPS
  • Study the derivation of average speed formulas in kinematics
  • Learn how to apply the time-distance-speed relationship in problem-solving
  • Practice solving similar kinematics problems using different speeds
  • Explore the implications of varying speeds on average velocity calculations
USEFUL FOR

Students studying physics, educators teaching kinematics, and anyone seeking to improve their problem-solving skills in motion-related scenarios.

mpoole
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1. A car making a 99-km journey travels 38 km/h for the first 49.5 km. How fast must it go during the second 49.5 km to average 47 km/h?



2. Homework Equations ?



3. 47=.5(38+x)
 
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You need to consider time in your solution. For example, if the average speed is 47 km/h and the distance traveled is 99 km, how long should this take to occur?
 
Welcome to PF;
You didn't provide a lot of information - i.e. the "relevant equations" section is not filled in.
It is difficult to know what sort of reply will best fit your need.
From the unfinished calculation in section 3, we can make a guess but we could guess wrong.

Did you have a specific question for us or did SteamKing manage to cover it?
 

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