Starter Forces always arise from an ________ between two objects. Forces always come in ________. When you walk a pair of forces act on your foot and on the ______. Without ___________ we could not walk and cars could not be driven. Sometimes we want to reduce friction. To do this a ___________ is used.

Starter Forces always arise from an interaction between two objects. Forces always come in ________. When you walk a pair of forces act on your foot and on the ______. Without ___________ we could not walk and cars could not be driven. Sometimes we want to reduce friction. To do this a ___________ is used.

Starter Forces always arise from an interaction between two objects. Forces always come in pairs. When you walk a pair of forces act on your foot and on the ______. Without ___________ we could not walk and cars could not be driven. Sometimes we want to reduce friction. To do this a ___________ is used.

Starter Forces always arise from an interaction between two objects. Forces always come in pairs. When you walk a pair of forces act on your foot and on the ground. Without ___________ we could not walk and cars could not be driven. Sometimes we want to reduce friction. To do this a ___________ is used.

Starter Forces always arise from an interaction between two objects. Forces always come in pairs. When you walk a pair of forces act on your foot and on the ground. Without friction we could not walk and cars could not be driven. Sometimes we want to reduce friction. To do this a ___________ is used.

Starter Forces always arise from an interaction between two objects. Forces always come in pairs. When you walk a pair of forces act on your foot and on the ground. Without friction we could not walk and cars could not be driven. Sometimes we want to reduce friction. To do this a lubricant is used.