Question

a man covers a distance of 50m in 20s .calculate the speed of the man in (¡) m/s (¡¡) km/h​

Answer 1

Answer:

the speed of the man in m/s = distance / time

= 50/20

=2.5m/s

in km /h = 2.5×18/5

=9 km/h

Answer 2

Answer:-

• Distance=50m
• Time=20s

We know that

$\boxed{\sf Speed=\dfrac{Distance}{Time}}$

$\\ \sf \longmapsto Speed=\dfrac{50}{20}$

$\\ \sf \longmapsto Speed=2.5m/s$

Converting to km/h

$\\ \sf \longmapsto 2.5\times \dfrac{18}{5}$

$\\ \sf \longmapsto 18\times 0.5$

$\\ \sf \longmapsto 9km/h$