Suppose you are a judge and the case under your consideration is : “Whether a car driver was exceeding a speed limit of 40 km/h before he made an emergency stop, the length of the skid marks on the road was 3m? You may assume the maximum deceleration to be ` 10m//s^(2) ? ` "

Explanation

To determine whether the car driver was exceeding the speed limit of 40 km/h before making an emergency stop, we can follow these steps:

### Step 1: Identify the given values
- Length of skid marks (s) = 3 m
- Maximum deceleration (a) = -10 m/s² (negative because it is deceleration)
- Final velocity (v) = 0 m/s (the car comes to a stop)

### Step 2: Use the third equation of motion
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