A racing car is travelling along a straight test track with an initial speed of 60 m s-1. The telemetry system records the following distance data during an emergency stop:
| Distance / m\text{m}m | |
|---|---|
| Thinking distance | 15 |
| Braking distance | 150 |
| Stopping distance | 165 |
The racing car decelerates at a constant rate once the brakes are applied.
What is the magnitude of the deceleration of the racing car during the braking phase?
11 m s−211\text{ m s}^{-2}11 m s−2
24 m s−224\text{ m s}^{-2}24 m s−2
12 m s−212\text{ m s}^{-2}12 m s−2
120 m s−2120\text{ m s}^{-2}120 m s−2
