Respuesta :

#1

  • This is happening because the force exerted by both of them is equal which is making the net force 0. And we know that when net force is 0, no movement takes places...

#2

For this let us take the force applied by karina 5 Newton and the force applied by Layla be 5 Newton...

Here, The forces are equal..

[tex] \sf \: 5 = 5 \\ \tt \: they \: will \: be \: cancelled \\ \sf \: = 0[/tex]

#3

  • Well, this is happening because now the force on karina's side is greater than the force on layla's side making layla move forward and backward...

#4

Let us now the force applied by karina is 5 Newton, Force by stephanie is 5 Newton and Force by layla is 5 Newton..

[tex] \sf \: 5 = 5 + 5 \\ \sf \: 5 \not= 10 \\ \sf \: 5 < 10[/tex]