Q.

The initial velocity of a particle is u (at t = 0 ) and the acceleration f  is given by at. Which of the following relation is valid

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a

v=u+at2

b

v=u+at22

c

v=u+at

d

v=u

answer is B.

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Detailed Solution

If acceleration is variable (depends on time) then  v=u+∫(f)dt=u+∫(at)dt=u+at22
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The initial velocity of a particle is u (at t = 0 ) and the acceleration f  is given by at. Which of the following relation is valid