Question

From one set of footprints the length of the foot is
measured as 21.8 cm and the stride length as 104.6
cm. What does the data suggest about the height
and the motion of the person who made these
footprints?

Answer 1

SOLUTION

GIVEN

From one set of footprints the length of the foot is measured as 21.8 cm and the stride length as 104.6 cm.

TO DETERMINE

The data suggest about the height and the motion of the person who made these footprints

FORMULA TO BE IMPLEMENTED

1. Height = 7 × Length of foot

$\displaystyle \sf{2. \: \: Relative \: stride \: Length \: = \frac{Stride \: Length }{Hip \: Height} }$

3. Hip Height = 4 × Length of foot

EVALUATION

Here it is given that the length of the foot is measured as 21.8 cm

So Height

= 7 × Length of foot

= 7 × 21.8 cm

= 152.6 cm

Now Hip Height

= 4 × Length of foot

= 4 × 21.8 cm

= 87.2 cm

Now it is mentioned that the stride length as 104.6 cm.

So

$\displaystyle \sf{Relative \: stride \: Length \: = \frac{Stride \: Length }{Hip \: Height} }$

$\displaystyle \sf{ \implies \: Relative \: stride \: Length \: = \frac{ 104.6}{87.2} }$

$\displaystyle \sf{ \implies \: Relative \: stride \: Length \: = 1.1995 }$

Since Relative stride Length < 2

So the person is walking

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