Question

plz anybody solve this question
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Answer 1

Answer:

(a). 4t/3

Explanation:

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Case 1 : When velocity reduces by (3/4) of initial velocity .

v = u - (3/4)u = u/4

We know that :

• v = u-at
• u/4= u - at
• (3/4)u = at
• u = 4at/3

Now, when velocity is 0 :

• v' = u' - at'
• 0 = (1/4)u - at'
• t' = (u/4a)
• = (4at/3*4a) = t/3

So total time = t + t/3 = 4t/3