Question

How would you arrive at a mathematical formula to measure force using second law of motion define the unit of force using this formula

Answer 1

let a force F be applied on a body of mass m for time t due to which its velocity changes from u to v . then

 initial momentum=mu 
 final momentum=mv
change in momentum of the body in t sec=mv-mu
                                                                  =m(v-u)
rate of change of momentum
     change in momentum-÷time=m(v-u)÷t
but acceleration a=v-u÷t
                             
rate of change of momentum-=ma
                                                =mass×accaleration

Answer 2

Answer:

Explanation:

let a force F be applied on a body of mass m for time t due to which its velocity changes from u to v . then

 initial momentum=mu 

 final momentum=mv

change in momentum of the body in t sec=mv-mu

                                                                 =m(v-u)

rate of change of momentum

    change in momentum-÷time=m(v-u)÷t

but acceleration a=v-u÷t

                            

rate of change of momentum-=ma

                                               =mass×accaleration