16. For a race Manish ran at a speed of 6 m/s for 10 seconds. He ran a further 40 m at a speed of 8 m/s.
What is his average speed for the race in km/h?
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Answer:
24km/hr
Step-by-step explanation:
D of 10sec=6m/s×10s=60sec
Time to travel 40m=40m/8m/s=5s
A.S=Total distance/Total time taken
A.S=(60m+40m)/(10s+5s)
A.S=100m/15s=100/1000×3600/15km/hr
A.S =24km/hr
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