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Q.

If a particle moves along a straight line by S=4t2−8t+3 and the time at which the particle comes to rest is ' t ' seconds ' 2t ' is

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a

2

b

1

c

4

d

8

answer is A.

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Detailed Solution

v=dsdt=8t−8∴v=0∴t=1 Hence option (A) is correct.

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