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Physics
The displacement of a body is given to be proportional to the cube of time elapsed. The magnitude of the acceleration of the body is
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Q. The displacement of a body is given to be proportional to the cube of time elapsed. The magnitude of the acceleration of the body is
Motion in a Straight Line
A
increasing with time
67%
B
decreasing with time
14%
C
constant but not zero
12%
D
zero
7%
Solution:
As $x \propto t^{3}$
Velocity, $v \propto 3t^{2}$
Acceleration, $a\propto 6t$