12. The following figure is of a traffic sign board placed near school for road safety. 30 a) What does the board indicate? (1) b) A motor bike rider travels 180 km in 2 hours through the road near the school Calculate his average speed. Does he cross the speed limits as per Kerala Road Safety Rules. C) Which is the device used to find the speed in vehicles.
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12. The following figure is of a traffic sign board placed near school for road safety. 30 a) What does the board indicate? (1) b) A motor bike rider travels 180 km in 2 hours through the road near the school Calculate his average speed. Does he cross the speed limits as per Kerala Road Safety Rules. C) Which is the device used to find the speed in vehicles.
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Answer:
a) The sign board indicate speed below 30 km/hr
b) velocity = speed
Time
= 180 km
2 h
Average speed = Total distance
Total time
= 90 - 30
2
= 30 km/h
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