The average speed of a car is 600 metres/minute. How much slower(in metres/second) does the car run than a sprinter who covers 100 metres in 9.6 seconds?
Answer & explanation
Correct answer: option 4
The average speed of a car = 600 metres/minute = 10 m/sec
Speed = \(\frac{DIstance}{Time}\)
The average speed of a sprinter = \(\frac{100}{9.6}\) m/sec
Difference of the average speed of car and sprinter = \(\frac{100}{9.6}\) – 10
Difference of the average speed of car and sprinter = \(\frac{40}{96}\)
= \(\frac{5}{12}\) m/sec
So , The car runs \(\frac{5}{12}\) m/sec slower than a sprinter.