A car is travelling on road at `50kmh^-1`. The driver applies brakes and brings the car to rest. Which frictional force does more work: (a) the force between the wheels and the brakes or (b) the force between the wheels and the road?

Explanation

To solve the problem, we need to analyze the work done by the two frictional forces involved when the car comes to rest.

### Step-by-step Solution:

1. **Identify the Forces**:
- The two frictional forces in question are:
- (a) The force between the wheels and the brakes (braking force).
- (b) The force between the wheels and the road (frictional force).
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