According to problem -
mass= 10 kg;
velocity(v)= 2 m/s;
time(t)= 0.1 sec
Now we can give force(F) by
[tex]F=\text{ ma}[/tex]where a= acceleration
[tex]a=\text{ }\frac{v}{t}=\frac{2}{0.1}=20\text{ m/s}^2;[/tex]Now using force formula
F= ma= 30×20= 600 Newton
Therefore the girl will experience a force of 600 N.
