Question

Force of 25N, brings a change in momentum of 50 Ns. The force acts on a body for​

Answer 1

Answer:

Force of 25N, brings a change in momentum of 50 Ns  in 2 sec.

Explanation:

Force is defined as the change in momentum of a body with a change in time.i.e. how much change in momentum occurs in a certain period of time in a body. Expression of force in terms of momentum is given as             $F= \frac{dp}{dt}$  -----------(i)

          dp = change in momentum    

       dt = change in time

Given : change in momentum = 50 Ns          

   force is giv en = 25 N

so we have from equation (i)  

   $F=\frac{dp}{dt}$    

 $25=\frac{50}{dt}$    

 $dt= \frac{50}{25}$    

 $dt= 2 sec$

Hence force works on a body for 2 sec