A force f1 acts on a particle, so as to accelerate it from rest to a velocity v. If the force f1 is replaced by f2, which decelerates it to rest, A force f1 acts on a particle so as to accelerate it from rest to a velocity v. If the force f1 is replaced by f2 which decelerates it to rest September 8, 2020 Category: Cengage NEET by C.P Singh , Chapter 6 - Newton's Laws of Motion , Part 1 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related