Question

Which one of the following is travelling with the fastest speed?

• A. An athlete running with a speed of 10 m/s
• B. A bicycle moving with a speed of 200 m/min
• C. A tortoise covering 100 metres in 15 minutes
• D. A motorcycle moving with a speed one km/h

Answer 1

The correct option is A An athlete running with a speed of 10 m/s

To get the correct answer,we need to convert each speed in same unit i.e. m/s
A)An athlete running with a speed of 10 m/s
B)A bicycle moving with a speed of 200 m/min it can be written as
$=\frac{200}{60}m/s$
$=3.33m/s$
C)A tortoise covering 100 metres in 15 minutes
$=\frac{100}{15}m/min$
$=\frac{100}{15\times 60}m/s$
$=0.11m/s$
D)A motorcycle moving with a speed one km/h
$=1km/h$
$=\frac{1000}{1\times 60\times 60}$
$=0.27m/s$
Comparing A, B, C, and D one can easily say that answer is option A i.e.
An athlete running with a speed of 10 m/s is the fastest.