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A force of ‘P* N acts on a particle so as to accelerate it from rest to a velocity 'v' m/s. The force 'P’ is then replaced by ‘Q’ N which decelerates it to rest.
  • a)
    P must be equal to Q
  • b)
    P may be equal to Q
  • c)
    P must be unequal to Q
  • d)
    none of these
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A force of ‘P* N acts on a particle so as to accelerate it from ...
To decelerate a body, a force must be applied opposite to the direction of velocity, irrespective of its magnitude.
According to the condition of motion under two forces P and Q must be acting in opposite directions and may be equal, not necessarily must be equal.
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Most Upvoted Answer
A force of ‘P* N acts on a particle so as to accelerate it from ...
When the magnitude of force Q opposed the force P with the same magnitude then only it can be in the rest position .
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Community Answer
A force of ‘P* N acts on a particle so as to accelerate it from ...
10 N is applied to a box with a mass of 2 kg. What is the acceleration of the box?

Using Newton's second law of motion, we can find the acceleration of the box:

F = ma

Where F is the force applied, m is the mass of the box, and a is the acceleration.

Plugging in the values we have:

10 N = 2 kg x a

Simplifying:

a = 10 N / 2 kg

a = 5 m/s^2

Therefore, the acceleration of the box is 5 m/s^2.
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A force of ‘P* N acts on a particle so as to accelerate it from rest to a velocity v m/s. The force P’ is then replaced by ‘Q’ N which decelerates it to rest.a)P must be equal to Qb)P may be equal to Qc)P must be unequal to Qd)none of theseCorrect answer is option 'A'. Can you explain this answer?
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