Question

acceleration is in the direction of motion give an example

Answer 1

Dropping something down.

Answer 2

Answer:

The acceleration is in the direction of motion is explained with the example of a car.

Explanation:

Acceleration is defined as “rate of change of velocity per unit of time”.

$\bold{a=\frac{V f-V i}{t f-t i}} \quad \rightarrow (1)$

Acceleration being a vector quantity, has both magnitude and direction. Hence acceleration can be positive, negative or zero.

E.g. of positive acceleration: A car driver starts his car from highway toll booth. He finds highway free and increases his velocity gradually from 0 to 60 in 10 seconds. By putting these values in equation (1),

$a=\frac{60-0}{10-0}=6 \mathrm{m} / \mathrm{s}^{2}$

Hence car has positive acceleration in the direction of motion.