Key Idea.
Section 1
Forces Act as Pushes or Pulls
A force is a special kind of action that is always a "push or a pull". When a soccer ball is kicked, a push makes it move. When a wagon is tugged along the ground, a pull makes it move.
Forces are not something an object has on its own. A force always happens between at least two objects. For a toy block to slide across a table, a hand must push it. The force is the interaction between the hand and the block.
Expand to review the lesson summary and core properties.
Section 1
Forces Act as Pushes or Pulls
A force is a special kind of action that is always a "push or a pull". When a soccer ball is kicked, a push makes it move. When a wagon is tugged along the ground, a pull makes it move.
Forces are not something an object has on its own. A force always happens between at least two objects. For a toy block to slide across a table, a hand must push it. The force is the interaction between the hand and the block.