Shomili
from
Global Indian International School, Singapore
Subject :NSO Class : Class 8
A body goes from point X to point Y with a speed of 10 m s-1. It comes back to X with a speed of 20 m s-1. The average speed of the body during the journey is ______.
A15 m s-1
B16.6 m s-1
C13.3 m s-1
D30 m s-1
Hi, I am a bit confused about this question... How could the answer possibly be 'C'? The answer is most obviously A... Please comment.
Ans 1:
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ARUNAV
from
DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 9
the answer on brainly is correct. cannot paste here- but a hint- better to use formula then logic sometimes
Ans 2:
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Ans 5:
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Arnav Raj Sharma
from
GEMS International School the ultra master mega, Gurgaon
Class : Class 7
shoulda be option A average of 10 and 20 is 15, NOT 13.3
Ans 7:
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Paarth Vashistha
from
Kunskapsskolan Gurgaon , Gurgaon
Class : Class 8
total distance / total time = average speed
Ans 8:
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Ans 12:
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Aditya Saha
from
The Lexicon International School Kalyaninagar Pune, Pune
Class : Class 10
it is a bing says so