 A push  A pull  A twist  Using a spring balance  The unit forces are measured in is the newton (after Sir Isaac Newton)  The symbol for a newton.

Slides:

Advertisements

Similar presentations

Force and Motion Review.

Advertisements

Unit 2.1 Force and Motion Learning Goal (TEKS): Identify and describe the changes in position, direction, and speed of an object when acted upon by unbalanced.

Forces Types of forces Contact and non-contact forces Friction

Chapter 13, Section 2 Gravity and Motion

Forces in Motion. Galileo proved that the rate at which an object falls is not affected by the mass.

Gravity and Free Fall.

Laziness ≈ Inertia. For centuries physics slept in Aristotle’s ( BC) shadow.

Forces and Motion.

12.1 Forces Objectives: M 4-1 Describe examples of force and identify appropriate SI units used to measure force. 10 M 4-2 Explain how the motion of an.

Chapter 13 The Nature of Forces.

Forces. Force Push or pull that acts on an object Newton The measurement of force *You can measure force using the spring scale at a grocery store. *A.

Newton’s Laws of Motion. Newton’s Laws of Motion 1. An object in motion tends to stay in motion and an object at rest tends to stay at rest unless acted.

Balanced & Unbalanced Forces

Jeopardy Q 1 Q 2 Q 3 Q 4 Q 5 Q 6Q 16Q 11Q 21 Q 7Q 12Q 17Q 22 Q 8 Q 13 Q 18 Q 23 Q 9 Q 14 Q 19Q 24 Q 10 Q 15 Q 20Q 25 Final Jeopardy

Change in Motion Motion When something moves, its in motion. Motion is change in an object’s position. A motionless object is at rest or stationary.

Forces Introduction Intersections smart car crash stopping distance

Cars And Forces - Gravity.

Define forces as pushes or pulls which can cause objects to ; speed up, slow down, change direction.

Think, pair and share… Draw the diagram below in your journal.

Forces and Motion. Motion The process of changing from one position, or place, to another.

Forces and Motion Review 8 th Grade TAG Physical Science.

2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 2 pt 4 pt 6 pt 8 pt 10 pt 1pt Vocabulary Words Describing Motion.

Forces & Motion Forces. Forces are acting all around you. Forces are acting all around you. Objects, including you, are being pushed and pulled in different.

QOD#48 What does each line represent? A – B – C – D – Time Distance Acceleration (speeding up) A B C D deceleration (slowing down) Stopped – no motion.

The Nature of Force.

Newton’s Laws of Motion Sir Isaac Newton ( )

Chapter 10 Forces and Motion. Gravity Gravity is a force of attraction that acts between bodies that have a mass. Gravity is a force of attraction that.

Today copy the words that are red and underlined.

7.1 What are forces? Forces act on you all the time. If you surf, you can feel many forces pushing and pulling you in different directions. Gravity always.

A LOOK AT THE NATURE OF ENERGY Force and Motion. What is Force? A force is a push or pull. A force may give energy to an object, creating motion, stopping.

FORCES AND MOTION. FORCE A force is any push or pull from one object to another.

Forces Pages 188 to 191. Forces Force - a push or a pull, measured in Newtons (N) Contact Force – is a push or a pull one object applies to another object.

Chapter 3. Definition of FORCE: –A push or pull on an object What forces cause: –An object to start moving –An object to stop moving –Speed up or slow.

Target Thursday January 3, What is gravity? 2.How do you know it is there? 3.What causes gravity? 4.Name 3 things that are in motion in this room.

Forces and Newton’s Laws Video Warm Up. What is a force? A force is a push or pull that causes an object to move, stop, or change direction. In physics,

12.1 Forces Bellringer 2/22 1.What do you think is a force? 1.Name some forces you can think of off the top of your head. 1.How do you think we measure.

Chapter 11 Section 2 Forces and Motion What are Forces? Force - is a push or pull that causes an object to move faster or slower, stop, change direction,

Notes: Motion and Forces A.What is motion? 1. An object is in motion if it involves a change in position relative to a reference point. 2. Distance is.

Identify the following scientists. 1.Ancient Greek who incorrectly stated that heavy objects fall faster than lighter objects and a constant force was.

Forces and their effects. What is a force? A force is a push or a pull. A force cannot be seen, but you can see how a force effects an object.

Calculating Force and Types of Friction

Chapter 8 Lesson 3 Forces.

Newton’s 1st Law of Motion

Balanced and Unbalanced Forces

The Nature of Force.

A Look at the Nature of Energy

Forces and Motion Review

Gravity Notes Part 1.

C Force Forces Types of forces Balanced and unbalanced forces

Forces & Megastructures

Forces and Newton’s Laws

Gravity & Laws of motion

Forces Chapter 7.

Link up the force types with a pictures. Explain your choices!

SSA Review - 9 Forces & Motion

Forces Affecting Motion

Friction is defined as a

FCAT Review - 9 Forces & Motion

Velocity- the speed and direction of an object.

Unit 2 Forces in Motion Answers with Explanations

Goal 4 - Gravity and Newton’s First Law

Forces Review 8th Grade Science.

Motion and Force.

Forces Push Pull Twist.

Force and Motion Review.

Presentation transcript:

 A push  A pull  A twist

 Using a spring balance  The unit forces are measured in is the newton (after Sir Isaac Newton)  The symbol for a newton is N

 We draw forces using an arrow  The arrow shows the direction the force is acting in  The size of the arrow shows how big or small the force is This shows a large force This shows a small force

A. The SPEED of an object  It can make something move  It can speed something up  It can slow something down  It can make something stop moving eg. hand twisting a door knob eg. wind pushing on a sail eg. girl pushing a rock eg. a stone being pulled towards the earth by the force of gravity

B The SHAPE of an object eg. a crashed car eg. a squashed pillow

C The ENERGY of an object Eg. the stones gravitational potential energy changes to kinetic energy when the force of gravity acts on it

This means that the force acts between objects that can TOUCH each other eg. a girl pushing a rock eg. the force of friction which acts when one surface is moving across other surface eg. wind pushing a windmill blade eg. a girl pulling on a fishing rod Eg. a bat hitting a ball

 This means that the force acts between objects that DO NOT TOUCH each other eg. magnetic force eg. gravitational force eg. electrostatic force

1. If the forces on an object are BALANCED (even on all sides), the object will KEEP DOING WHAT IT IS ALREADY DOING This means it will keep stationary (still) OR keep moving at a STEADY (CONSTANT) SPEED ie. the motion will not CHANGE

2. If the forces on an object are UNBALANCED (not even on all sides) the object will CHANGE WHAT IT IS DOING This means it will Start moving if it was stationary OR If it was already moving the object will Move faster Slow down Turn a corner ie. the motion will CHANGE

1. Describe the MOTION (or lack of motion) of the object to decide whether the forces are balanced or not 2. Decide what forces are acting on the object 3. Draw the force arrows around the object, begin arrow at the centre of the picture and label them 4. Make sure the arrow head is facing away from the picture 5. Draw large arrows for large forces and small arrows for small forces 6. Draw the force of gravity pulling downwards on all objects on or above the earths surface

Make things change their SHAPE Eg. crushing a can in a can crusher. The unbalanced force is downwards Make things change their DIRECTION Eg. a bus turning a corner. The unbalanced force is towards the inside of the turn

When 2 different massesare dropped from the same height they;  Travel downwards at the same speed  Have the same acceleration (they speed up the same amount)  Are pulled downwards equally because the force of gravity on each mass is the SAME

The masses hit the ground at the same time. (remember coin/feather and Galileo’s cannon balls)