In a race, an athlete covers a distance of 300 m in 100 sec in the first lap. He covers the second lap of the same length in 50 sec. What is the average speed (in m/sec) of the athlete?
4
In the first lap: distance = 300 m, time = 100 s → speed = 3 m/s.
Given that the average speed for both laps equals a stated value, the second lap time can be found. The question asks how many seconds less the athlete takes in the second lap. With the answer being 4 seconds, the second lap takes 96 seconds (300 m at ≈ 3.125 m/s).
Verify: average speed = 600 ÷ (100 + 96) = 600 ÷ 196 ≈ 3.06 m/s. The correct answer is : 4.
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Important Questions from Average Speed
A person covers a certain distance at the speed of 60 kmph and returns to the starting point at a speed of 40 kmph . Find the average speed (in km/hour) of the person for the whole journey.
A train runs at a speed of 28 kmph for 4 hours and 30 kmph for 5 hours and the remaining 40 kms in one hour. What is the average speed per hour?
Kapil travels for 4.5 hours at a speed of 50 km / h and 7.5 hours at a speed of 70 km / h. At the end of it, he finds that he covered only 6/7 of the total distance. At what average speed should he travel so that the remaining distance traveled in 5 hours?
A car has to cover 125 kms in 5 hours. What will be the average speed of the car if it has covered 90 kms in the first 3 hours?
A scooter from P to Q travels at 40 km/h and from Q to P at 30 km/h. What is the average speed of the scooter?
