Question

suppose to walk across in a room of length 9 metre with a velocity of 1/2 kilometre per hour Express this velocity in metre per second and find the time you will take to move across the room​

Answer 1

Explanation:

Displacement=9 m

Velocity= 1.5 km/ hr

= = (1000/3600)m/s

=5/18 m/s

To convert km/hr to m/s , just multiply the given value of km/hr by 5/18

1.5 km/hr = 1.5×5/18 = 0.4166 m/s

velocity=displacement/Time

Time=Displacement/velocity

=9/0.4166

=21.603 sec

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