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Effects of Forces Change shapeChange shape
Effects of Forces Change shapeChange shape
Change of Shape
extension Force is directly proportional to extension
When force doubles, the extension doublesWhen force doubles, the extension doubles F α xF α x F x = constant Hooke’s Law
Force is directly proportional to extension F1F1 x1x1 = F2F2 x2x2 m1m1 x1x1 = m2m2 x2x2
What if we put more weights than we did? Limit of proportionality See p.23 SQ and Key PointsSee p.29 question 5
Effects of Forces Change the state of motionChange the state of motion –Move from rest –Speed up –Slow down –Stop –Change its direction
Balanced Forces The book stays still!
Balanced Forces The airplane moves forwards at constant speed!
Balanced Forces The car moves at constant speed! Drag Friction Thrust
Unbalanced Forces The car moves from rest. The car speeds up.
Unbalanced Forces The car slows down to stop. The car slows down. See p.25 SQ and Key PointsSee p.27 SQ and Key Points
1 Thrust from the engine Friction Will the car speed up, slow down or stay at constant speed?
Forces Types of Forces Effects of Forces Gravity, Mass and Weight Newton’s Laws Freefall.
What is Inertia? Sir Isaac Newton discovered gravity and that all objects have inertia Inertia is the tendency of an object to stay at rest or in motion.
WHAT IS A FORCE????? PUSH A force is a push….. PULL … or a pull.
Forces and Motion. Contents Velocity and Acceleration Velocity and Acceleration D-T Graph D-T Graph S-T Graph S-T Graph Newton’s Laws of Motion Newton’s.
How Can Forces Affect Objects?. Slow them down Speed them up Stop them Start them Change their direction Change their shape.
Forces act in pairs. Force engine = thrust friction = drag.
Laws of Motion Newton’s First Law. Force changes motion A force is a push or pull, or any action that is able to change motion.
100 Newton’s First Law Lab 99 11/13/2014 Starter: Exit: When a car suddenly stops at a red light, a book lying on the car seat slides forward. Explain.
FORCES An object’s motion is the combined affect of all forces acting on an object.
6.1 Newton’s First Law pp NEWTON’S THREE LAWS OF MOTION In his book, Principia, Newton described the three laws of motion. He did not discover.
What could be another term for drag? a) Sliding friction b) Fluid friction c) Balanced force d) Unbalanced force.
A force is a push or pull that can cause motion (speed up, slow down, stop, move, or change direction) Force is measured in Newtons (N) Force is.
Force and Motion Newton’s First Law 8th Grade Science.
Section 4-4. Tendency of an object to stay at rest or in motion. Because of inertia, an object at rest tends to stay at rest and an object in motion tends.
Aristotle wrote that moving objects need a push or pull to stay in motion. Galileo showed that moving objects would keep moving in a straight line.
Chapter Six: Laws of Motion 6.1 Newton’s First Law 6.2 Newton’s Second Law 6.3 Newton’s Third Law and Momentum.
Newton’s First Law of Motion. First we need to define the word FORCE: The cause of motion (what causes objects to move) Two types of forces –Pushes –Pulls.
Teacher instructions Students will be watching a video in Username: atcscience Password:
Are You Smarter Than a 5 th Grader? Each correct Answer Worth 0.5 Extra Credit Points on Speed and Force Quiz.
Airplane forces. Weight and Lift WEIGHT – directed to the center of earth – airplane parts, fuel, and people, luggage or freight LIFT – generated by the.
Forces & Motion answers Chapter 2. Key terms Force: A push or pull Net Force: the combination of all of the forces acting on an object.
Describing Motion Newtons Laws. First we need to define the word FORCE: The cause of motion (what causes objects to move) Two types of forces –Pushes.
How can we describe how objects move?. The law of BALANCED FORCES Objects at rest tend to stay at rest. Objects in motion tend to stay in motion.
Speeding up and slowing down f = ma Terminal velocity.
Notes: Newton’s 1 st Law 16 Dec EQ: How are force and motion related?
Describe Speed A way to describe motion –Average speed - Rate of motion calculated by dividing the distance traveled by the amount of time it takes to.
Newton’s Laws of Motion Sir Isaac Newton ( )
PHYSICS – Forces 1 LEARNING OBJECTIVES Effects of forces Core Recognise that a force may produce a change in size and shape of a body Plot and.
Force and Motion ISCI Force: ‘push’ or ‘pull’ on an object 2. Objects in motion stay in motion unless enacted upon by a ‘unbalanced’ force. Newton’s.
Forces & Motion. Describe Acceleration A change in velocity – which may be: –A change in speed Starting Stopping Speeding up Slowing down –A change in.
Newton’s Second Law: Force and Acceleration 8SCIENCE.
The first law of motion states that n object at rest will remain at rest and an object in motion will remain in motion unless acted on by an outside force.
Unbalanced Forces 8.6A Net Force Key Terms 1. Force 2. Balanced Force 3. Unbalanced Force 4. Net Force 5. At rest 6. Direction 7. Motion 8. Friction.
FORCE. Force: a vector with the units - Newton (N). "An object at rest tends to stay at rest and an object in motion tends to stay in motion; A force.
Measurement and Motion Force Force is a kind of push or a pull on an object.
Unit 6.3 physics. An object at rest will stay that way unless a force acts on it An object in motion will continue to move in the same direction and.
Newton’s First Law of Motion. First Law of Motion This law states that the state of motion of an object does not change as long as the net force acting.
1 st Law of Motion Vocabulary Terms. Sir Isaac Newton ➔ Mathematician ➔ Physicist ➔ Observed the apple falling from the tree = created the theory of gravity.
Forces and Motion. Force A Force is a push or pull on an object. Forces have a direction. Forces have a strength (magnitude) and are measured in Newtons.
Force and Motion The only reason an object changes it velocity is because a force acts on the object. Remember a change in velocity can be either a change.
Newton's first law of motion is often stated as An object at rest stays at rest and an object in motion stays in motion with the same speed and in the.
Describing Motion Newton’s Laws. First we need to define the word FORCE: A push or a pull exerted on an object in order to change the motion of the object.
Newton’s Laws Review. Name the Law What are the forces? Law: Forces: 1 st : Object at rest will stay at rest(balanced) 2 nd: F=ma (who has the most Newtons?)
Guided Discussion Student notes are shown in blue.
Rockets. Rocket A chamber enclosing a gas under pressure Small opening allows gas to escape providing thrust in the process Which of Newton’s Laws?
Balanced Forces and Unbalanced Forces Forces Change Motion We know that a force is a _____or a _____. There are many kinds of forces. Let’s name 3: Gravity.
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