Q.

A body is moving according to the equation x - at - bt2 - ct3 where x=displacement and a, b and c are constants. The acceleration of the body is

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a

a + 2bt

b

2b + 6ct

c

2b - 6ct

d

3b + 6ct2

answer is C.

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Detailed Solution

x = at - bt2 - ct3v = a + 2bt - 3ct2a = 2b - 6ct
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