a race car can be slowed with a constant acceleration of -11m/s^2. a)if the car is going 55m/s, how many meters will it travel before it stops?

a race car can be slowed with a constant acceleration of -11m/s^2.a)if the car is going 55m/s, how many meters will it travel before it stops?b) how many meters will it take to stop a car going twice as fast?