A force is defined as a push or pull acting on an object. Forces can cause objects to move, stop, speed up, slow down, or change direction. It is a fundamental concept that influences motion and shape in our daily lives.

The video details the two primary types of force: push and pull. A 'push' moves an object away from you, making it go forward or outward (e.g., pushing a shopping cart, kicking a ball). A 'pull' moves an object towards you, bringing it closer or causing it to move in your direction (e.g., tagging a rope, opening a door).

Force is measured in units called Newtons (N), named after Sir Isaac Newton who discovered that force is necessary to change an object's motion. Forces are measured using a spring balance or force meter; the extent of the spring's stretch indicates the strength of the force.

Forces are essential in our daily lives because they enable motion, stop motion, change direction, and alter the shape of objects. Gravity, a natural force, keeps us grounded. Without force, everything would remain still, emphasizing its pervasive and critical role.