Pine trees are the most common
The clear explanation for the forces mentioned in the question given below
Explanation:
1.A non-contact force that is generated between charged objects is known as "Magnetic force" eg: train tracks, new roller coaster, a compass, motor.
2.A non-contact force that is generated from moving charges is known "Electrical force". eg: Electric charge in a bulb.
3. A non-contact force that exists between objects with mass is known as "Gravitational force". eg: The force that causes apple to fall down from trees, The force thatt makes us to walk instad of floating.
4.A force that requires physical contact between objects is known as "Contact force". eg: moving a chair or table across a room, kicking a ball
