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A horse began running due east and covered 25 km in 4.0 hr. What is the average velocity of the horse?

A0.16 km/hr due east
B6.25 km/hr due east
C16 km/hr due east
D100 km/hr due east

Verified Answer :

mathssydney

B) 6.25 km/hr due east 

valeriagonzalez0213

Answer:

B) \(v = 6.25\frac{km}{hr}\) due east

Explanation:

Conceptual analysis

The average speed (v) is defined as the relationship between the displacement (d)  that a body made and the total time (t) it took to perform it and is calculated by the following formula:

\(v = \frac{d}{t}\) Formula (1)

v: velocity in m/s

d: Displacement (m)

t: Time (s)

Known data


We know the following data

d = 25 km

t = 4.0 hr


Problem development

We replace data in formula (1):

\(v =\frac{25km}{4hr}\)

\(v = 6.25\frac{km}{hr}\)

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