In science, numerical examples are an essential part of understanding the concepts. Solved numerical examples help to understand the application of the concepts in real-life situations. In this document, we will discuss some solved numerical examples from the chapter "Motion" of Class 9 Science.




Given,
- Distance = 240 meters
- Time taken = 6 seconds

We know that,
- Speed = Distance/Time

Putting the values in the formula, we get:
- Speed = 240/6 = 40 meters/second

Therefore, the speed of the car is 40 meters/second.




Given,
- Distance = 360 km
- Time taken = 5 hours

We know that,
- Speed = Distance/Time

Putting the values in the formula, we get:
- Speed = 360/5 = 72 km/h

To convert km/h to m/s, we multiply the speed with 5/18 (as 1 km/h = 5/18 m/s).
- Speed = 72 x 5/18 = 20 m/s

Therefore, the speed of the train is 72 km/h or 20 m/s.




Let's calculate the distance covered by the car in the first 2 hours:

- Distance = Speed x Time
- Distance = 40 x 2 = 80 km

Similarly, let's calculate the distance covered by the car in the next 3 hours:

- Distance = Speed x Time
- Distance = 60 x 3 = 180 km

Therefore, the total distance covered by the car is the sum of the distance covered in the first 2 hours and the distance covered in the next 3 hours:

- Total Distance = 80 + 180 = 260 km

Therefore, the total distance covered by the car is 260 km.


Numerical examples are an essential part of understanding the concepts of science. In this document, we discussed some solved numerical examples from the chapter "Motion" of Class 9 Science. The examples help to understand the application of the concepts in real-life situations.

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