Qstnid -Ii-9-a Force F<sub>1</sub> Acts On A Particle Accelerating It From Rest To A Velocity V. Force F<sub>1</sub> Is Then Replaced By F<sub>2</sub> Which Decelerates The Particle To Rest. - 05: Newton's Laws Of Motion - Neet-xii-physics

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NEET-XII-Physics

05: Newton's Laws of Motion

with Solutions - page 2

Qstn# ii-9 Prvs-Qstn Next-Qstn

#9
A force F₁ acts on a particle accelerating it from rest to a velocity v. Force F₁ is then replaced by F₂ which decelerates the particle to rest.
(a) F₁ must be equal to F₂.
(b) F₁ may be equal to F₂.
(c) F₁ must be unequal to F₂.
(d) None of these.
digAnsr: b
Ans : (b) F₁ may be equal to F₂.
Any force applied in the direction opposite the motion of the particle decelerates it to rest.