Explanation:
Let east direction is negative and west direction is positive. The acceleration of an object is given by :
[tex]a=\dfrac{v-u}{t}[/tex]
Where
v is the final speed
u is the initial speed
t is the time taken
As the car decelerates, the final speed of the car is less as compared to the initial speed. As a result, its acceleration is negative. It means the car travels eastward and slows down. Hence, this is the required solution.