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Standard IX

Physics

Time and Speed

We drive a di...

Question

We drive a distance of 1 km at 16 km / hour. Then we drive and additional distance of 1 km at 32 km / hour. What is our average speed?

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Solution

sol- first we find time taken to complete first 1km = 1/16h
then,find time taken to complete second 1km =1/32h
Average speed= total distance travel /total time taken
》1+1/1/16+1/32
》2×32/3
》64/3
》21.33km/h
Answer =21.33km/h

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We drive a distance of 1 km at 16 km / hour. Then we drive and additional distance of 1 km at 32 km / hour. What is our average speed?

sol- first we find time taken to complete first 1km = 1/16h then,find time taken to complete second 1km =1/32h Average speed= total distance travel /total time taken 》1+1/1/16+1/32 》2×32/3 》64/3 》21.33km/h Answer =21.33km/h

sol- first we find time taken to complete first 1km = 1/16h
then,find time taken to complete second 1km =1/32h
Average speed= total distance travel /total time taken
》1+1/1/16+1/32
》2×32/3
》64/3
》21.33km/h
Answer =21.33km/h