An object travelsn20m in 4 sec and then 20m in 2 sec what is the average speed?
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Answer:
1st distance travelled = 20m
2nd distance travelled = 20m
total distance travelled = 20+20m = 40m
1st time taken= 4 second
2nd time taken= 2second
total time taken = 4+2second = 6second
average speed = total distance travelled/total time taken
average speed = 40/6m/s
= 20/3m/s
= 6 2/3 m/s
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