^Tangential force

^Tangential force

1. A force acting along or opposite to velocity is called tangential force.
2. A force acting along velocity increases speed with time.
3. A force acting opposite to velocity decreases speed with time.
4. Tangential force can’t change direction.
5. The work done by a tangential force is positive if it causes an increase in the KE of a system & negative if there is a loss of KE.