Question

Two cars A and B race each other. The Car A ran for 2 minute at a speed of 7.5 km/h, slept

for 56 minute and again ran for 2 minute at a speed of 7.5 km/h. find the average speed of the

car A in the race.​

Answer 1

Distance traveled in first 2 minutes:

Time- 2/60hours

Speed-7.5km/h

S-7.5?2/60=0.25km

Distant traveled in last 2 minutes:

Time-2/60

Speed-7.5km/h

Distance=7.5?2/60=0.25

Distance in between was zerokm

Total distance-0.25+0.25=0.50km

Total time-56+2+2=60 min or 1 Hour

Speed (av)=total distance/total time

0.50/1=0.50km/h