Calculating Vehicle Deceleration: Time & Distance

AI Thread Summary
To calculate the vehicle's deceleration, apply Newton's second law, where the net force equals mass times acceleration. The vehicle's weight is 4200 lbs, and the braking force is 2850 lbs, leading to a net force of 1350 lbs. This net force can be used to determine the deceleration and subsequently calculate the time to stop, distance traveled during deceleration, and the velocity after 3.2 seconds of braking. The initial velocity of 65 mph must be converted to consistent units for calculations. Using these principles will yield the required results for the braking scenario.
ajayespinoza
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Homework Statement



A 4200lb vehicle is cruising down the highway at 65mph when the driver steps on the brake applying a braking force of 2,850lbs
Determine the time to stop, assuming uniform deceleration
Distance traveled during the deceleration
Velocity of the vehicle after 3.2 sec's of braking

Homework Equations



V = (p2-p1)/time

The Attempt at a Solution


I currently do not have any attempts at a solution other than
4200-2850 then divide that by 65?
 
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ajayespinoza said:
A 4200lb vehicle is cruising down the highway at 65mph when the driver steps on the brake applying a braking force of 2,850lbs
Determine the time to stop, assuming uniform deceleration
Distance traveled during the deceleration
Velocity of the vehicle after 3.2 sec's of braking

Hi ajayespinoza! :smile:

Hint: Start by using good ol' Newton's second law to find the deceleration. :wink:
 

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