A force P acts on a particle so as to accelerate it from rest to certain velocity. If P is replaced then by Q which decelerates it to rest.

A force P acts on a particle so as to accelerate it from rest to certa

1.	A force P acts on a particle so as to accelerate it from rest to certain velocity. If P is replaced then by Q which decelerates it to rest.
Answer» <P>P must be EQUAL to Q P may be equal to Q P must be unequal to Q `P (gt)/(LT) Q` ANSWER :D