Calculating Distance Traveled When Reacting to an Emergency

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SUMMARY

The discussion focuses on calculating the distance a car traveling at 100 km/h would cover during a reaction time of 0.27 seconds in an emergency situation. The initial calculation incorrectly used inconsistent units, leading to confusion. After correcting the units, the accurate distance traveled is determined to be 0.0075 kilometers, or 7.5 meters, during the reaction time. This emphasizes the importance of unit consistency in physics calculations.

PREREQUISITES
  • Understanding of basic physics concepts, specifically motion and distance calculations.
  • Familiarity with unit conversions, particularly between kilometers and meters.
  • Knowledge of reaction time and its impact on driving safety.
  • Basic mathematical skills for performing calculations involving speed and time.
NEXT STEPS
  • Research the impact of reaction time on stopping distance in emergency situations.
  • Learn about unit conversion techniques, especially for speed and distance.
  • Explore the physics of motion, focusing on equations of motion and their applications.
  • Investigate safety measures and technologies that can reduce reaction time while driving.
USEFUL FOR

This discussion is beneficial for drivers, automotive safety researchers, and students studying physics, particularly those interested in the dynamics of vehicle motion and emergency response scenarios.

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Homework Statement


Use your reaction time to determine how far a car you are driving at 100km/h would travel between the time you see an emergency and the time you slam on your brakes.


Homework Equations





The Attempt at a Solution


Given:

v = 100km/h
d = ?
t = 0.27 s

d = v*t
d = 100 * 0.27
=27?

Somehow I think this is wrong.
 
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Watch your units. They need to be consistent with each other to get a meaningful answer.
 
hage567 said:
Watch your units. They need to be consistent with each other to get a meaningful answer.

Ah true, so 100 * 0.000075
= 0.0075

Therefore, i will travel 0.0075 kilometres during that time.
 

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