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The displacement of a particle is given as function of time as x = t2 + 2t. How much displacement is covered in the first 5 seconds?
  • a)
    5 units
  • b)
    35 units
  • c)
    40 units
  • d)
    0 units
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The displacement of a particle is given as function of time as x = t2+...
Calculation:

Given, the displacement of a particle as a function of time is x = t2 - 2t.

To find the displacement covered in the first 5 seconds, we need to substitute t = 5 in the above equation.

x = (5)2 - 2(5) = 25 - 10 = 15 units.

Therefore, the displacement covered in the first 5 seconds is 15 units.

Answer: Option B. 35 units.

Explanation:

The given equation represents the displacement of a particle as a function of time. To find the displacement covered in the first 5 seconds, we need to substitute t = 5 in the equation.

x = (5)2 - 2(5) = 25 - 10 = 15 units.

Therefore, the displacement covered in the first 5 seconds is 15 units.

Option B. 35 units is not the correct answer.
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Community Answer
The displacement of a particle is given as function of time as x = t2+...
The displacement covered in the first five seconds can be obtained by putting t = 5 in the equation. Therefore, x = 55 + 2(5) = 25 + 10 = 35. Hence the answer is 35 units.
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