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3 years ago

Motion equation of object is

Physics

1 answer:

Ganezh [65]3 years ago

5 0

Take the derivative to find the velocity of the object:

$v=\dfrac{\mathrm dx}{\mathrm dt}=-12+6t$

The object stops when $v=0$ :

$-12+6t=0\implies6t=12\implies t=2$

so the answer is E.

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