Forces in 2 dimensions help

[Knowneo]

The question is:
The driver of a car whose weight is 13000 Newtons traveling at 108km/hr slams on the brakes in order to undergo a constant acceleration, skidding to a complete stop in 4.5 seconds.
What is the average force that the brakes must exert during braking?

So far i have the acceleration (-200m/sec) and the mass (1326.5kg) I'm not sure if those are right, but besides that I am at a loss at what to do next.

 

[hotvette]

Welcome to PF!

1. Show us how you arrived at the value for acceleration (though you used units of velocity)

2. Which of Newtons's laws might be applicable here?

 

[m2003]

I would like to clarify that the given information is not sufficient to accurately determine the average force exerted by the brakes during braking. In order to calculate the force, we would need to know the coefficient of friction between the car's tires and the road surface, as well as the distance traveled during braking.

Additionally, the given acceleration of -200m/s^2 does not seem to be correct, as it is an extremely high value and does not correspond to the given speed and time. It is important to double check all the given information and calculations to ensure accuracy in the results.

Furthermore, it is important to note that forces in 2 dimensions involve both magnitude and direction. In this case, the direction of the force would be opposite to the direction of motion, as the car is decelerating.

In conclusion, more information is needed to accurately determine the average force exerted by the brakes during braking. It is important to carefully consider all the given information and use appropriate equations and units to solve the problem.