Question 69
The speed of a man is 45 km/h. In how much time(in seconds) will he cover a distance of 225 meters?
Solution
The speed of a man is 45 km/h.
Here we need to convert km/h into m/s. Because time is needed in seconds.
speed of a man = 45 km/h = $$45\times\ \frac{1000}{3600}$$ m/s
= 12.5 m/s
Time taken by man to cover a distance of 225 meters = $$\frac{225}{12.5}$$
= 18 seconds
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