study the table :
1. Is the car moving with constant speed ?
2. What is the average speed ?
3. Which duration represents the maximum velocity
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ANSWER:
- no car is not moving with constant speed
- average speed = total distance covered/ total time taken
so , 15 +28 +40+ 60/ 1:30 min
average speed = 143/5400
average speed = 6.143
3. from 12:00 to 12:30 pm car travels 20 km in 30 mins
from 11:30 to 12:00 car travels only 12 km in 30 mins
and from 11:00 to 11:30 car travels only 13km
hence maximum velocity is between 12 :00 to 12:30
Explanation:
In second case
we will not consider time from 10:30 because cae has do not cover any distance in that duration.
so we will add from 11:00 to 12:30 which is
1:30 ( one hour thirty mins )
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