Question

A person travels a distance of 72 km in 4 hours. Calculate average speed in m/s ji​

Answer 1

Explanation:

distance=72km=72*1000=72000m

time=4hr=4*3600=14400s

so, speed=distance/time

=72000/14400

=720/144

=5m/s

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Answer 2

Answer:

Given

• Distance : 72 km
• Time : 4 hours

To find

• Average speed of the person in m/s

Solution

$s = \frac{d}{t}$

$s = \frac{72}{4}$

$s = 18$

Now,

• To convert it into m/s we need to multiply it by 5/18

$\sf {18} \times \frac{5}{18}$

$\sf - - > 5 \frac{m}{s}$