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Question

A particle is moving along the xaxis whose acceleration is given by a=3x4, where x is the location of the particle. At t=0, the particle is at rest at x=4/3 m. The distance travelled by the particle in 5 s is

A
Zero
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B
42 m
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C
Infinite
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D
None of these
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Solution

The correct option is A Zero
t=0,
x=43 and
V=0
=0=3×(43)28×43+C
C=323163=163
v=3x28x+163$
Now see
at x=43
a=3x4
=3×434
=a=0
it will no move angular
S=0

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