2 Force is…A force is a push or a pull resulting from an interaction between objects.Since you can’t push or pull without doing so in a direction…force is a vector. It has a direction.The unit for force is Newton.
3 Gravitational ForceThe pulling force between two objects that have mass.ALL objects that have mass are gravitationally attracted to each other.The force of gravity is equal to the weight of an object.
4 Applied ForceA push or pull applied by a person or an object.
5 Normal ForceThe supportive force when one thing rests on another thing.Squishy force.Pillow force.
6 Frictional ForceThe force that opposes motion when moving (sliding friction) or still (static friction).Different surfaces cause different amounts of frictional forces.Friction causes heat.
7 Air Resistance ForceThe force that occurs when particles of air hit a moving object, making it harder to move.
8 Spring ForceThe force applied to a stretched or compressed spring wanting to return to it’s regular position.
9 Tension ForceA pulling force in a string, rope, chain, or other similar material.Bridges have lots of tension forces.