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?
Answers
Answered by
0
hey your ans is here
______
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
______
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
nandyaloka7:
Is there 120 seconds in 2 hours according to you??
166.6 km/per second
So u get ur answer as wrong
ok
Answered by
0
Using, S=ut + 1/2at² after
v=u+at ,
then we get speed =40 km/h ans.
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