How do helmets protect your head? a. By creating a large area to spread out the pressure of a blow to your head. b. By focusing
the pressure of a blow into a small area. c. By creating a vacuum that protects your head. d. By creating a pressure gradient that traps energy away from your skull.
The net force is the sum of the forces acting on an object ( chair ). F net = F 1 + F 2 F 1 = 20 N, F 2 = - 12 N F net = 20 N + ( - 12 N ) = 8 N The chair will tend to move to the left.
