- #1

devilish_wit

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## Homework Statement

While learning to drive, you are in a

**1 320-kg car**moving at

**34.0 m/s**across a large, vacant, level parking lot. Suddenly you realize you are heading straight toward a brick sidewall of a large supermarket and are in danger of running into it. The pavement can exert a

**maximum horizontal force of 6 300 N**on the car.

(1) Suppose you apply the brakes and do not turn the steering wheel. Find the minimum distance you must be from the wall to avoid a collision.

(2) If you do not brake but instead maintain constant speed and turn the steering wheel, what is the minimum distance you must be from the wall to avoid a collision?

## Homework Equations

F = ma

a = V^2 / r

## The Attempt at a Solution

m = 1320 kg

v = 34 m/s

F = 6300 N

(1) F = ma

6300 N = 1320kg a ---> a = 6300 N/1320kg =

**4.77 m/s^2**

Vf^2 = Vi^2 x 2ad

0 = (34 m/s)^2 + (2)(4.77)d

(34m/s)^2 / 2(4.77m/s^2) = d --->

**d = 121.17m (This answer is correct)**

(2) a = v^2 / r...

I'm not sure how to answer this second question and where to start. Any ideas?