Question

1km/h=_____m/s
1.10
2.100
3.18/5
4.5/18​

Answer 1

Answer:

• 1 km/h = 0.28 m/s = (5/18).

Step-by-step explanation:

We know that ,

• 1km = 1000m
• 1hr = 60 minutes [Let it be eq. 1]
• 1 minute = 60 seconds [Let it be eq. 2]

By substituting eq. 1 and eq. 2 , we get :

• 1 hr = 60 seconds (i.e. we have replaced 1 minute by 60 seconds)
• 1 hr = 60 × 60 seconds = 3600 seconds.
• 1 hr = 3600 sec [Let it be eq. 3]

By conversion , we get :

• 1 km/hr = 1000m/3600 sec = 0.27777777 m/s ≈ 0.28m/s (approximately).

So,

• To convert km/h to m/s we multiply the given number by 5/18 or 0.28m/sec.

Therefore,

• Option 4. is right.