Constant Acceleration: find time

AI Thread Summary
The discussion revolves around a physics problem involving a car decelerating to stop after traveling 99 meters. Participants clarify the use of the equation Δx = 1/2 (vi + vf) * t to find the time required for the car to stop. There is confusion about determining Δx, which is already provided in the problem statement. The conversation emphasizes understanding the variables involved in the equation and how to apply them correctly. Ultimately, the focus is on solving the problem using the given data effectively.
Akar
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Homework Statement


A man was driving a car at 78 km/h, he saw a deer at the distance of 101m, how much time is needed so that the car slows down after it drove 99m and stops.

Homework Equations


Δx = 1/2 (vi + vf) * t​

The Attempt at a Solution


I'm thinking about finding the Δx
 
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Akar said:
I'm thinking about finding the Δx
not sure I understand. Are you saying you do not know how to determine Δx? It is given.
 
Akar said:

Homework Statement


A man was driving a car at 78 km/h, he saw a deer at the distance of 101m, how much time is needed so that the car slows down after it drove 99m and stops.

Homework Equations


Δx = 1/2 (vi + vf) * t​

The Attempt at a Solution


I'm thinking about finding the Δx
Aren't you given the Δx? How far did the car drive until it stopped?

Edit: Oops! @haruspex got there before me!
 
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