The driver of a car traveling at 60 ft/sec suddenly applies the brakes. The position of the car is s(t) = 60t − 3t2, t seconds after the driver applies the brakes. How many seconds after the driver

The driver of a car traveling at 60 ft/sec suddenly applies the brakes. The position of the car is s(t) = 60t − 3t2, t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop?

60

30

20

10