1

IIT-JEE 1982

MCQ (More than One Correct Answer)
A particle is moving eastwards with a velocity of 5 m/s. In 10s the velocity changes to 5 m/s northwards. The average acceleration in this time is
A
zero
B
$${1 \over {\sqrt 2 }}m/{s^2}$$ towards north-west
C
$${1 \over {\sqrt 2 }}m/{s^2}$$ towards north-east
D
$${1 \over 2}m/{s^2}$$ towards north

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