Question

a bullet train travels at a speed of 365km/h .in august 2001 singapore 's national record for the men's 100m sprint was set at 10.37 seconds. How many times is a bullet trains as fast as the fastest Singaporean sprinter?
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Answer 1

Answer:

A bullet train is $\10.5$ as fast as the fastest Singaporean sprinter.

Step-by-step explanation:

First, we will put the man's velocity in terms of km/h instead of 100m/s.

If the man runs 100m in 10.37 seconds, the he runs 1km in 103.7 seconds. Once one hour is $60^2$ seconds, in one hour he will run $\frac{60^2}{103.7}  \approx 34.7$ kilometers. So he runs 34.7km/h

This means a bullet train is $\frac{365}{34.7} \approx 10.5$ as fast as the fastest Singaporean sprinter.

Answer 2

Answer:

bullet train is 10.51 times fast as the fastest Singaporean sprinter

Step-by-step explanation:

bullet train travels at a speed of 365km/h

=> Speed of bullet Train = 365 km/ hr

1 km = 1000 m

1 hr = 3600 s

= 365 * 1000 / 3600  m/s

= 365 * 5 /18  m/s

Speed of fastest Singaporean sprinter  = 100 / 10.37   m/s

Bullet Train speed/Singapore Spribter speed

= (365 * 5 /18 ) /(100 /10.37)

= 365 * 5 * 10.37 / 1800

= 10.51

bullet train is 10.51 times fast as the fastest Singaporean sprinter