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A child has legs that are each 0.500 m long. What is her maximum walking speed?

A. 2.21 m/s
B. 2.19 m/s
C. 2.6 m/s
D. 5.58 m/s

Respuesta :

If a child has legs of length 0.500m long, to calculate the maximum walking speed, use this formula:
s=√gl
s=walking speed, g=acceleration due to gravity that is 9.8m/s2 and l is the length of legs which is 0.500m
so,
s=√(9.8)(0.500)
s=√4.9
s=2.21m/s 
so  A is the correct option, her maximum walking speed is 2.21 m/s.

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