Question

(v) A bus covers a distance of 36 km in 2 hours. Find the speed of the bus in metre
per second. .​

Answer 1

Answer:

36 km in 2 hours, so 18 km in 1 hour

= 18000 m in 60 min

= 300 m per min

= 300 m per 60 seconds

= 300/60 m/s = 5 m/s

Final answer : 5 m/s

Answer 2

Answer:

5 m/s (meters per second)

Step-by-step explanation:

There are two ways to solve this questions:

1) Convert the distance to meter n time into seconds at the first step

2) Convert the speed (km/h) into meter per second

For the first part:

Distance = 36km = 36 * 1000 = 36000 meter

Hour = 2 hrs = 2 * 60 * 60  = 7200 sec

Speed = Distance/Time = 36000/7200 = 5m/s

For the second part:

Distance = 36 km

Time = 2 hr

Speed = s/t (dist/time) = 18km/h

{Now to convert it into m/s multiply the answer with 5/18 (it is 1000/3600 in simplified form) }

speed in m/s = 18 × $\frac{5}{18\\}$ = 5m/s

Both the ways get us the same answers but I'll suggest the second one as it makes the calculation part easier.

(Note:- To convert km/h into m/s multiply the speed with 5/18. To convert m/s into km/h multiply the speed with 18/5 (its is 3600/1000 in simplified form)

Hope it helped :)