Question

Q-4 Express each of the following in ms
90 km h-¹
II) 36 m min-1​

Answer 1

Answer:

90kmph

90*25/90=26ms-¹

36m/min

min=60sec

36/60=6/10ms-¹

Answer 2

We know that,

1 km = 1000 m

1 hour =3600

Now converting km/h into m/s, we get

90 km/h = 90 km/h x 5/18 = 25m/s.

(1000÷3600)= 5/18

II) It's already in metre so we just need to change min in second

So, 1 min =60 second.

36/60= 0.6 m/sec..

Hope it helps..

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