# Lakhmir Singh Solutions Class 9 Physics Solutions for Exercise in Chapter 1 - Motion

Question 3 Exercise

Change the speed of 6 m/s into km/h.

6 m/s = 6×(3600/1000) km/h = 21.6 km/h

Video transcript
"hi guys welcome to lido q a video i'm vinit i'm your leader tutor and i am very excited to bring you yet another question on your screen change the speed of 6 meter per second into kilometer per hour so six meter per second can be written as six meter by one second now six meter in kilometers is given by six by thousand and one second is one by three six zero zero hours now we have kilometer per hour again when we are dividing fractions we multiply it with the reciprocal of the second fraction multiply the first fraction with the reciprocal of the second fraction right kilometer per hour now this is equal to very easy right so 36 into 6 is equal to 216 so 21.6 kilometer per hour isn't that easy guys right okay i'll see you in our next video until then bye kids keep practicing keep learning also do like the video and subscribe to our channel bye"
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