A body starts from rest has an acceleration of 5m/s2 its velocity 10 m/s distance is
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Explanation:
AB
=i+4j−k and
CD
=−2i−8j+2k
Hence the angle between the vectors is given as
θ=cos
−1
(
AB.CD
AB
.
CD
)
=cos
−1
(
18
×
72
−2−32−2
)
=cos
−1
(
36
−36
)
=cos
−1
(−1)
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