Final answer:
The magnitude of the centripetal acceleration of the car is 2.88 m/s².
Step-by-step explanation:
The centripetal acceleration of a car can be calculated using the formula:
ac = v2 / r
where ac is the centripetal acceleration, v is the velocity of the car, and r is the radius of the circular cloverleaf.
Plugging in the given values, we have:
ac = (12 m/s)2 / 50 m = 2.88 m/s²
Therefore, the magnitude of the centripetal acceleration of the car is 2.88 m/s².