Which of the following Pair are not parent and child who have both won the Nobel prize?
Who is the first women boxer to be honoured with the Rajiv Gandhi Khel Ratna Award?
Which is the only Test playing nation that India has never beaten in T20 International ?
Who was the first women nominated member of Rajya Sabha of India?
Which Nobel laureate began his career as an accountant in the finance department of the Indian government in Calcutta?
Mitrabheda, Mitralabha, Kakolukiyam, Labdhapranash and Apariksitakarakam are different chapters of which ancient text?
Which of these does not hold true for mammals?
After Jyoti Basu, who has held the office of chief minister for any Indian state for the longest time?
Which of these Indian Para-athletes won the gold medal in high jump at the Rio Paralympic Games ?
At Rio 2016, who made the record for the fastest goal scored in football in Olympics by scoring a goal in 14 seconds?
A and B run a km race. If A gives B a start of 100 m, A wins by 20 sec and if A gives B a start of 50 sec, B wins by 30 m. Then what is the time taken by A to run a km?
It takes A 196.9 seconds to run 1000 m.
We have two races.
Race 1 is 1000 meter for A and 900 meter for B. A wins by 20 seconds.
Race 2 is 970 meter for A and 1000 meter for B.
t = time (sec), v = speed (m/s), a and b are for A and B. And time = distance / speed
This gives us the following equations:
For race 1:
t1 = time for B to finish the race
t1 - 20 = 1000 / va
t1 = 900 / vb
Thus: 900 / vb = 1000 / va + 20
For race 2:
t2 = time for B to finish the race (excluding the head start)
t2 = 970 / va
t2 + 50 = 1000 / vb
Thus: 970 / va = 1000 / vb - 50
This can be rewritten to: 900 / vb = 873 / va + 45
Now we have 900 / vb = 1000 / va + 20 = 873 / va + 45
Rewrite to: 127 / va = 25 => va = 127 / 25 = 5.08 meter/second.
vb then is 4.15 m/s
Race 1: A runs the 1000 m in 197 seconds. B runs the 900 m in 217 seconds => 20 second difference.
Race 2: B runs the 1000 m in 241 seconds. Subtracting the head starts means A runs for 191 seconds. In that time A runs 970 meter and loses by 30 meter.
Lavesh, Bhavesh, and Vignesh race each other in a 100 meters race. All of them run at a constant speed throughout the race.
Lavesh beats Bhavesh by 20 meters.
Bhavesh beats Vignesh by 20 meters.
How many meters does Lavesh beat Vignesh by ?
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