## Which of the following information is necessary to describe an object’s motion? A: speed B: position, direction, and speed C: position D: direction

October 12, 2019// Blog//

**Answer : The correct option is a car’s velocity changes from 25 m/s to 20 m/s in 5 seconds.**

**Explanation : **

**Acceleration :** It is defined as the change in velocity divided by the time.

**The formula of Acceleration is, **

So, we can calculate the acceleration only for 2nd option which is a car’s velocity changes from 25 m/s to 20 m/s in 5 seconds.

In this option, velocities and time are given.

**In all the other options, the velocity and time are not given. So, we can not calculate the acceleration. **

**Hence, the correct option is a car’s velocity changes from 25 m/s to 20 m/s in 5 seconds.**