Question

61. At any instant of time acceleration and velocity of
a particle are given by a=i+j & j = 6 +8ì.
then rate of change of speed at the same instant
will be:-
(3î+4)
6 +8]
(1)
(2)
25
25
7
(3) zz (31 +8)
(4)
(3ỉ+49)
25​

Answer 1

Answer:

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