THE NATURE OF FORCE & MOTION
THE NATURE OF FORCE & MOTION
Motion is the change in position of an object.
A Force is a pushing or pulling action that may result in motion. There can be any number of forces exerted on an object.
The Net Force is the overall force on an object.
When there is a net force acting on an object, the force is said to be unbalanced. An unbalanced force on an object will change the object’s motion.
Equal forces acting on an object in opposite directions are called balanced forces. Balanced forces will not change the object’s motion.
Balanced & Unbalanced Forces
Forces Can Combine
+ = = Net Force = 0
Unbalanced Force
Forces Can Cancel Each Other Out
+ = 0 Net Force = 0
Balanced Force
Forces Can “Subtract” From Each Other
+ = = Net Force = 0
Unbalanced Force
Galileo Galilei (1600’s) stated that whether at motion or rest, every object resists any change to its motion. This resistance is called inertia. Inertia is the tendency of an object to resist any change in its motion.
Sir Isaac Newton restated Galileo’s idea in the first of his 3 laws of motion.
Newton’s First Law of Motion: An object at rest will remain at rest, and an object moving at constant speed will continue moving at constant speed unless acted upon by an unbalanced force. Newton’s first law is also call the law of inertia. (Can you explain why?)
Mass is the amount of matter in an object. The SI unit is gram (or kilogram). Remember 1kg = 1,000 grams.
The amount of inertia an object has depends on its mass. The greater the mass of an object, the greater its inertia. So, mass can be defined as a measure of the inertia of an object.
[pic]
[pic]
[pic]
[pic]
[pic]
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
Related searches
- the nature of science answers
- the nature of the learner
- the nature of science worksheet
- the nature of science section 1 answers
- the nature of science worksheet answer key
- 1 2 the nature of science answer key
- chapter 1 the nature of science
- the nature of truth
- discuss the nature of philosophy
- the nature of virtue aristotle
- understanding the nature of evil
- the nature of sound waves