Key Takeaways

KEY TAKEAWAYS

• Newton’s laws of motion apply to the motion of objects and the forces applied to objects.

• The force that moves something must be external to the object or system in order to have movement.

• There will be x- and y-components to the force on the object, with x and y to be determined according to the system being looked at.

• The force is described as a Newton with a person’s weight being their mass multiplied by the force of gravity.

• Normal force is an upward force that directly opposes a person’s weight with respect to the surface they are standing on.

• There is kinetic friction, which applies to movement, and static friction, which applies to something stationary.

• Deformation is the change in shape of an object because a force has been applied to it. The force may be parallel to the length of a linear object or perpendicular to a linear object, such as a nail, wire, cylinder, or even a board.