* Force: A push or pull that can change an object's motion. Measured in Newtons (N).
* Distance: The displacement an object undergoes under the influence of the force. Measured in meters (m).
Work is the energy transferred to or from an object by an applied force causing the object to move.
Formula:
Work (W) = Force (F) x Distance (d)
Units:
* Work is measured in Joules (J). One Joule is equal to one Newton-meter (N·m).
Key Points:
* Direction matters: The force and the distance must be in the same direction for work to be done. If the force is perpendicular to the displacement, no work is done.
* Work can be positive or negative: Positive work is done when the force and displacement are in the same direction, meaning energy is transferred to the object. Negative work is done when the force and displacement are in opposite directions, meaning energy is transferred from the object.
Example:
Imagine you push a box across the floor. You exert a force of 10 N, and the box moves 5 meters. The work done is:
Work = Force x Distance = 10 N x 5 m = 50 J
This means you transferred 50 Joules of energy to the box, causing it to move.
