Answer:
you determine net force of an object by using this formula:
F=M×A or force=mass×acceleration
really hope this helps:)
2. the scale factor is x= 4.5 cm
this is because when u see how much it dilated from 4cm to 2cm it divided from 2, so if u did the same for the other number. Which is 9, it’s 9/2 which equals 4.5
Your answers we equal to 22