1.

An object starts from rest and covers a distance of 20km in 2 hours . Find the speed of the object after crossing the 20km mark?

Answer» HEY your ANS is here

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given

d=20km------m
d=20×1000
d=20000m

t=2h-----sec
t=2×60×60
t=7200

speed=distance/time
speed=20000/7200
speed=2.7m/sec


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