12 years 3 months = 12 × 365 + 3 × 30 = 4470 days
= 4470 × 24 × 60 × 60 s
= 386208000 s
Question
The average age of children of Class VII is 12 years and 3 months. Express this age in seconds.
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Q1. What will be the position of the object at 20 s? Q2. What will be the distance travelled by the object in 12 s? Q3. What is the average speed of the object? 
Complete the data of the table given below with the help of the distance-time graph given in figure.
| Distance (m) | 0 | 4 | ? | 12 | ? | 20 |
| Time (s) | 0 | 2 | 4 | ? | 8 | 10 |