Force:
-Simply put, a force is a push or pull, or forces have both size and directions, a force can change the acceleration of an object when you see a change in an object’s motion, that is the change motion created by a force. Scientist express force using a unit called the Newton (N), Newton is named after Issac Newton.
Issac Newton, Newton is named after Issac Newton in recognition of his work on classical machines, specifically Newton’s second law of motion
-All forces act on objects, for any push to occur, something must receive the push, same as pull, something will receive the pull.However, a force acts on an object doesn’t mean that motion will occur. For example, the force you are exerting on the chair does not cause the chair to move, the chair doesn’t move because the floor is also exerting a force on the chair.
Net Force: the net force is the combination of the forces acting on an object, the way you determine the net force depends on the directions of the forces, For example, if two people are moving a car to the right, two-person could be either pulling or pushing or one person pull another person push, suppose two people are pushing the car in the same direction (right) , then one person is stronger, so the car receives more forces, suppose he/she is pushing 25m/hour, and another person is pushing the car with 20m/hour, then the way you determine the answer is to add both velocities together, which will be 25m/hour+20m/hour=45m/hour, then the car is moving 45 meters per hour.
It could be forcing in the opposite directions, suppose two people are fighting for one doll, both of them are pulling, but in the opposite directions, suppose one person is pulling to the right side, and another person is pulling to the left side, but one person is stronger in which caused an unbalanced situation. Suppose the stronger person is pulling to the right side with 12N, and another person is pulling to the left with 10N, then 12-10=2N, the stronger person will win the doll with 2N stronger.
Unbalanced forces and Balanced forces: an unbalanced force is caused by a stronger force against the weaker force, like a bicycle, it can never be balanced if unless you don’t change direction and keep a constant speed, but it is almost impossible.a balanced situation is when two forces that forcing an object to the opposite directions have the same force, they are equally strong.
