Question

Q. If an object is moving with a velocity
of 54 km/hr what will be it's velocity
in m/s? If it is moving for 5 secs, the
find the distance covered?​

Answer 1

Answer:

• Velocity = 15 m/s
• Distance covered = 75 m

Explanation:

km/hr to m/s :

1 km = 1000 m

1 hour = 60 min

= 60 × 60 sec [ ∵ 1 min = 60 sec ]

= 3600 sec

So,

1 kmph = 1000 m/3600 sec

⇒ 1 kmph = 10/36 m/s

⇒ 1 kmph = 5/18 m/s

Given, an object is moving with a velocity  of 54 km/hr.

It's velocity in m/s = 54 × 5/18 m/s

  = (3 × 5) m/s

  = 15 m/s

Speed = distance covered/time taken

⇒ 15 m/s = distance covered/5 sec

⇒ distance covered = (15 × 5) m

⇒ distance covered = 75 m