Determining Average Deceleration of a Car Using Equations of Motion

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SUMMARY

The discussion centers on calculating the average deceleration of a car that slows down from an initial velocity of 13 m/s to a complete stop over a distance of 640 meters. Using the equations of motion, specifically the formula that relates initial velocity, final velocity, displacement, and acceleration, the average deceleration is determined to be approximately 0.1 m/s². Participants emphasize the importance of showing prior attempts to facilitate effective assistance.

PREREQUISITES
  • Understanding of basic kinematics and equations of motion
  • Familiarity with the concepts of initial and final velocity
  • Knowledge of displacement in the context of motion
  • Ability to manipulate algebraic equations
NEXT STEPS
  • Study the equations of motion, particularly the formula: \( v^2 = u^2 + 2as \)
  • Learn how to derive average acceleration from velocity and displacement
  • Explore real-world applications of deceleration in automotive physics
  • Practice solving similar kinematics problems to reinforce understanding
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Students studying physics, particularly those focusing on kinematics, as well as educators seeking to clarify concepts related to motion and deceleration.

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I am stuck on this homework question can i have some help please?

A car is traveling at 13ms-1. It is allowed to slow down naturally without applying the brakes. The distance traveled in coming to rest is 640m.

Show that the average deceleration of the car is about 0.1ms-2.
 
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LaurenceFS said:
I am stuck on this homework question can i have some help please?

A car is traveling at 13ms-1. It is allowed to slow down naturally without applying the brakes. The distance traveled in coming to rest is 640m.

Show that the average deceleration of the car is about 0.1ms-2.
What have you tried thus far?
 
Welcome to the board! :)

Ok, here's a little help, since it comes to rest, the final velocity should be 0m/s. Now you have initial velocity, final velocity & displacement, try applying the suitable equation of motion.

But as Hootenanny said, you need to show us your attempts before asking for any help. Take care of that and have a look at the rules. :smile:
 

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