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HETAV PATEL

Grade 11,

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The distance covered by a particle in t seconds is given by x = 3 + 8t – 4t2. After 1 second velocity will be (A) 0 unit/second (B) 3 units/second (C) 4 units/second (D) 7 units/second

The distance covered by a particle in t seconds is given by x = 3 + 8t – 4t2. After 1 second velocity will be
(A) 0 unit/second (B) 3 units/second (C) 4 units/second (D) 7 units/second

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2 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
Givenx=3+8t−4t2x=3+8t-4t2,
On differentiating both sides w.r.tttwe get

Att=1,v=8−8−0t=1,v=8-8=0unit.
Vikas TU
14149 Points
3 years ago
Der student 
Correct ans is option A …........................................................................................................

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