Question

In which one of the following situations does a car have a WESTWARD acceleration? The car travels westward and slows down. The car travels westward at constant speed. The car travels eastward and speeds up. The car travels eastward and slows down. The car starts from rest and moves toward the east.

Answer 1

Explanation:

Let east direction is negative and west direction is positive. The acceleration of an object is given by :

$a=\dfrac{v-u}{t}$

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.