Question #c4ae2

1 Answer
Aug 18, 2017

yes,it can.


Newton's 1st law of motion: 'A body will continue to be in its state of rest or motion unless an unbalance external force acts upon it.'

Let a body move with an velocity 'v' having mass 'm'.
so it will gain a momentum due to its motion,which will be equal to product of its mass and velocity.
#this implies p=mv#

Now let an external unbalanced force act upon it.This will change it momentum.
#implies deltap=deltamv #
(#delta# represent 'change in' )

Mass never changes ,so change must be in velocity.
#implies deltap=mdeltav#

As we know,rate of change of momentum is equal to force and rate of change of velocity gives acceleration.
This is the 2nd law of motion.
Hence derived.