Question

a force of 18 Newton acts on a body of mass 20 kg for 10 seconds the change in momentum is A) 5kgms B) 100kgms C) 200kgms D) 1000kgms​

Answer 1

Answer:

We know that F=ma

momentum P=mv

then, F=m dv/dt

then F=mv/t

V=FT/m=18*10/20=180/20=9

given that F=18N,m=20,t=10

P=mv=20*9=180