Question

Suppose you walk across a room of length with a velocity of one and a half kilometer per hour. Express this velocity in m/s and find the time you will take to move across the room.

Answer 1

Answer:

Displacement = 9m

velocity = 1.5km/hr

1km/hr = 1000m/60×60sec

= (1000/3600)m/s

= 5/18m/s.

to convert km/hr to m/s ,just multiply the given value

of km/hr by 5/18.

v = 1.5× 5/18 = 0.4116.

v = d/t

t = d/v = 9/0.4116 = 21.603sec

hope its helps you.