The discussion revolves around a physics problem involving the braking distance of a car that decelerates from an initial velocity of 96 km/h to rest over a period of 3.0 seconds. The participants are exploring the calculations related to deceleration and the distance traveled during braking.
The discussion is ongoing, with participants providing feedback on each other's calculations and questioning the validity of the units. Some guidance is offered regarding the use of different equations of motion, indicating a productive exploration of the topic.
There are indications of confusion regarding the units of deceleration, with a specific mention that it should be expressed in m/s². The original poster's repeated question about the distance traveled suggests a focus on clarifying the problem setup.
kencamarador said:During the braking test of. 1988 car, the car came to rest from an initial velocity of 96km/h (w) in 3.0 seconds. Assuming that deceleration remains constant.
How far did the car travel after brakes were applied?
I calculated the deceleration. It is 8.9m/s (e)
berkeman said:Keep going...
This equation is missing something.[/QUOTE]kencamarador said:I used this equation to solve for Distance.
Vf^2 - vi^2/ 2 aav
VHF is final velocity and vi is initial velocity, aav is average velocity
=0^2 - 96^2/ 2 (8.9)
=-517.75
...
kencamarador said:During the braking test of. 1988 car, the car came to rest from an initial velocity of 96km/h (w) in 3.0 seconds. Assuming that deceleration remains constant.
How far did the car travel after brakes were applied?
I calculated the deceleration. It is 8.9m/s (e)
sjb-2812 said:Are you sure? This seems wrong to me (units?)
kencamarador said:8.9 is the deceleration.
My question is
How far did the car travel after brakes were applied?