Mass and Acceleration. Mass  Matter has substance. Solids, liquids or gasesSolids, liquids or gases Subatomic particlesSubatomic particles Planets and.

Slides:

Advertisements

Similar presentations

The Nature of Force Chapter 10 section 1.

Advertisements

Newton’s Second Law. But first… Review: Newton’s First Law If an object experiences NO net force…. Resting objects remain at rest. Moving objects move.

Physics: Engineering Mechanics I Chapters 1, 2, 3 1.

Chapter Six: Laws of Motion

Mass and Motion. Mass  Matter has substance. Solids, liquids or gasesSolids, liquids or gases Subatomic particlesSubatomic particles Planets and starsPlanets.

Momentum. Storm Damage  A house takes damage from the force of a 60 mph gale-force wind. If the house is subject to a hurricane at 120 mph the force.

Force and weight. Isaac Newton was the first person to explain WHY objects move the way they do. He based his laws of motion on two key concepts: mass.

Motions and Forces. How is speed calculated? The speed of an object can be calculated using this equation: distance travelled time taken speed =

Vocabulary and Formulae Created by Beverley Sutton Pueblo Gardens PreK-8.

NEWTON’S SECOND LAW OF MOTION Law of Acceleration.

 Calculate the acceleration that this object experiences 30 kg 150 N.

Newton’s second law Pg. 19 in NB

Newton’s Laws. Motion Velocity describes motion. –Speed and direction –At rest : no velocity Planets have a velocity at each point in their orbits. –Circle.

C H A P T E R 4 Forces and Newton's Laws of Motion.

Forces, Inertia, Weight and Gravity Heavy stuff..

Lecture 4: Gravity and Motion Describing Motion Speed (miles/hr; km/s) Velocity (speed and direction) Acceleration (change in velocity) Units: m/s 2.

Engineering Mechanics

Constant Acceleration. Graphs to Functions  A simple graph of constant velocity corresponds to a position graph that is a straight line.  The functional.

Newton’s 2 nd Law of Motion By: Heather Britton. Newton’s 2 nd Law of Motion Newton’s 2 nd Law of Motion states... The acceleration of an object is directly.

Momentum and Impulse. Answer Me!!! Forces cause objects to start moving. What keeps an object moving after the force is no longer applied?

Force = Mass x Acceleration (F = ma)

MOTION & FORCES VOCABULARY MOTION The process of continual change in the physical position of an object (distance) relative to reference point ; With.

The product of mass and velocity of a body is called momentum. Force and Laws of Motion Momentum Mathematically, Momentum = mass × velocity P = mv It is.

Dynamics: Newton’s Laws of Motion

Force and motion Objectives When you have competed it, you should

All forces that affect motion.

Momentum and Impulse. March 24, 2009 Momentum and Momentum Conservation  Momentum  Impulse  Conservation of Momentum  Collision in 1-D  Collision.

Unit 3 Newton’s Second Law of motion: Force and Acceleration

6.2 Newton's Second Law pp NEWTON’S SECOND LAW OF MOTION The acceleration of an object depends on the mass of the object and the amount of force.

Homework Read pages 96 – 101 Answer practice problems

Forces & Motion. What is a Force? Force: push or pull Unit: Newton (N)  Kg x m/s 2 Vector: has both magnitude & direction.

Newton’s second law. Acceleration(m /s 2 ) Mass (kg) The acceleration of an object equals the net force divided by the mass. Net force (N) Newton’s second.

NEWTON’S 2 ND LAW OF MOTION By: Per.7. WHAT IS IT? Newton's second law Of Motion Newton's second law Of Motion can be formally stated as follows: The.

Newton’s Second Law of Motion. 2 nd Law of Motion  The net (total) force of an object is equal to the product of its acceleration and its mass.  Force.

Aristotle 384 – 322 BC ISAAC NEWTON.

Ch. 12 Sec. 1 Forces. What is a Force?  Causes an object to move, or accelerate by causing a speed or direction change  Unit = Newton (N) Force that.

LAWS OF MOTION. 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 Second Law Speed Velocity Acceleration Distance traveled in a given amount of time – km/ h The speed of an object in a particular direction –

FRICTION AND GRAVITY.

Mechanics The study of Physics begins with mechanics. Mechanics is the branch of physics that focuses on the motion of objects and the forces that cause.

The Nature of Force and Motion 1.Force – A push or a pull – How strong it is and in what direction? 2.Net Force – The sum of all forces acting on an object.

S4 Physics Forces

Chapter 8 Forces & Motion.

Newton’s second law In this lesson, students learn to apply Newton's second law to calculate forces from motion, and motion from forces. The lesson includes.

Velocity-time graph QUESTIONS Q1) how do you calculate speed?

Vector & Scalar Quantities

Newton's 2nd Law Notes Mass vs. Weight.

FORCE AND MOTION.

Isaac Newton ( ) Newton’s Laws of Motion

Mechanics The study of Physics begins with mechanics.

Find the velocity of a particle with the given position function

Newton’s 2nd Law of Motion

Newton’s Second Law “ Forces do not cause motion. Forces cause accelerations”

6.2 Newton's Second Law pp

Chapter Six: Laws of Motion

Chapter Six: Laws of Motion

Forces & Motion.

When an unbalanced force acts on an object, the force: a

Lesson 3: Measuring Matter Essential Questions:

APPLIED MECHANICS Introduction to Applied Mechanics

Forces and the Laws of Motion

Newton’s 2nd Law of Motion

Motion Vocabulary.

Chapter Six: Laws of Motion

Constant Acceleration

Mass and Motion.

Presentation transcript:

Mass and Acceleration

Mass  Matter has substance. Solids, liquids or gasesSolids, liquids or gases Subatomic particlesSubatomic particles Planets and starsPlanets and stars  We feel the weight of different objects.  We will see that weight is not mass, but mass can have weight.  Mass measures the amount of matter in an object.

Mass Units  Mass is measured in kilograms. 1 kg = 1000 g1 kg = 1000 g 1 atomic mass unit (about the mass of one hydrogen atom) = 1.66 x kg1 atomic mass unit (about the mass of one hydrogen atom) = 1.66 x kg  Mass is a scalar. Mass times a vector gives another vectorMass times a vector gives another vector For instance, momentum:For instance, momentum:

Force and Acceleration  With force there is acceleration.  The amount of acceleration depends on the mass.  The direction of the force and acceleration are the same.

Force Units  Force is mass times acceleration.  The dimensions of force are M(L/T 2 ).  In SI units a newton (N) = 1 kg m / s 2.

Law of Action 2 The change in motion is proportional to the force and the change is made in the same direction as the force.  A force gives rise to action by acceleration.  Force = mass x acceleration (Newton’s second law). Rocket: has mass Force: becomes acceleration Initial velocity Final velocity: changed by the force

Accelerating a Mass  A loaded 747 jet has a mass of 3.6 x 10 6 kg and four engines.  It takes 1700 m at constant thrust (force) to reach a takeoff speed of 86 m/s (310 km/h).  What is the force per engine?  The distance and final velocity are used to get the acceleration.  The acceleration and mass give the force.  F = (7.8 x 10 6 N)/4 = 2.0 x 10 6 N.

Vector Force  A 1000 kg satellite in space is moving at 5 km/s when a rocket fires with a thrust of 5 x 10 3 N at 60° to the direction of motion.  The rocket fires for 1 minute. Where does it move after firing?  The force and acceleration are vectors.  Pick x in the direction of initial motion.  The new velocity is  v x = 5.1 km/s, v y = 0.26 km/s. next x 