Solving Physical Science Word Problems: Write down all given information Write the formula you need to solve the problem. Substitute the numbers in the.

Slides:

Advertisements

Similar presentations

Chapter 6 NEWTON’S 2 ND LAW Unbalanced Force Causes Acceleration.

Advertisements

Terminal velocity Weight Falling Air resistance Terminal velocity Questions.

FORCES Mrs. Cholak.

Newton’s Laws Conceptual Questions

Bellringer Answer the following two questions in complete sentences.

Falling Objects and Gravity. Air Resistance When an object falls, gravity pulls it down. Air resistance works opposite of gravity and opposes the motion.

Friction Gravity Newton’s Laws Momentum Forces.

Newton’s Second Law of Motion Page Force and Acceleration Force is a push or a pull. Acceleration is when the motion of an object changes. Examples:

Mrs. Border’s Science Class. Essential question The size of air resistance force depends on what two variables?

ForcesGravityNet ForcesFree Body Diagrams Misc Forces and Motion FINAL JEOPARDY Go To Score Card.

Forces and Friction. The weight of an object depends on the strength of gravity wherever the object is. The mass always stays the same.

Newton’s 2 nd Law of Motion Ch 3 Sect 1. Review Speed Definition Velocity Definition Acceleration Definition Mass Definition Force Definition.

Newton’s first law of motion states that the motion of an object changes only if an unbalanced force acts on the object. Newton’s second law of motion.

$200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $ 300 $400 $500 $100 $200 $300 $400 $500 $100 What is a Force? Newton’s.

Forces Chapter 4. Force & Motion Force-a push or a pull on an object System-the object(s) experiencing the force Environment-the world around the system.

Force : Push or pull Newton: unit to measure force Net force: combination of force Unbalance force: object start moving Balance force: object doesn`t move.

Physics Unit Four Forces that Affect Motion. Force A push or a pull. Measured in newtons with a spring scale. 1 newton (N) = 1 kg m/s 2 An apple weighs.

Newton’s Second Law of Motion. Force and Acceleration Force is a push or a pull acting on an object. Acceleration occurs when the VELOCITY of an object.

Newton’s Laws of Motion

Chapter 2: Force & Newton’s Laws. What is a balanced force? Forces that are equal in size but opposite direction.

Chapter 4 Newton’s Second Law of Motion NEWTON'S 2 nd LAW OF MOTION F a m Fa mm F a m m m Fa Fa Fa M MM.

Newton’s Laws of Motion 1 st - Inertia. 2 nd - F = ma 3 rd - Action/Reaction Take notes when see.

Chapter 2 Sir Isaac Newton’s Three Laws of Motion.

Jeopardy Newton’s 1st law Newton’s 2 nd law Newton’s 3 rd law Calcu- lations Review Questions $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 Final.

Newton’s Second Law of Motion. Newton’s Second Law Newton’s Second Law of Motion- Acceleration depends on the objects mass and the net force acting on.

1 1 Reviewing Main Ideas A force is a push or a pull. Newton’s First Law Newton’s first law states that objects in motion tend to stay in motion and objects.

Newton’s Second Law of Motion: Force and Acceleration

ForcesGravityNet ForcesFree Body Diagrams Misc Forces and Motion FINAL JEOPARDY Go To Score Card.

Force. Something that changes the state of rest or the state of motion of an object. Can be a push or a pull Unit of measure Newtons N.

Chapter 6 Forces in Motion.

As stated on physiscsclassroom. com Newton's second law of montion pertains to the behaviour of objects for which all existing forces are not balanced.

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

MS. MORGAN Force. What is a Force? Something that changes the state of rest or the state of motion of an object. Can be a…. push or a pull Unit of measurement:

Motion & Forces Vocabulary

Newton’s first law of motion states that an object will remain at rest or moving at a constant velocity unless it is acted upon by an unbalanced force.

Forces Motion and Forces. Forces What is a force? A force is a push or pull. What happens when forces combine? Forces combine to produce a net force.

ForcesGravityNet ForcesFree Body Diagrams Misc Forces and Motion FINAL JEOPARDY Go To Score Card.

Force (Chapter 3) Sep 29 Write everything in the yellow font.

Gravity and Air Resistance. Free Fall When falling the only force acting on an object is gravity Type of force when in free fall: unbalanced force Objects.

FRICTION AND GRAVITY.

FORCES CH. 2. What is a Force? Def: a push or a pull –Measured in Newtons Kg · m/s 2 –Balanced Force – an equal but opposite force acting on an object.

Friction, Gravity, and Pressure Friction Friction - The force that one surface exerts on another when the two rub against each other. Acts in a direction.

Gravitational Force  Gravity= a force of attraction between objects, “pulls” objects toward each other  Law of universal gravitation= all objects in.

“Law of Acceleration” Forces can be BALANCED or UNBALANCED Balanced forces are equal in size (magnitude) and opposite in direction UNbalanced.

Newton’s Laws of Motion

* Forces and Newton’s Laws force: a push or a pull

Forces Chapter 3.

Skydiving from space!! What can potentially go wrong? Does his acceleration change?

What is force? A force is a push or pull

Lecture 8 Motion and Forces Ozgur Unal

Free Body Diagrams & Net Force

Do now A baseball player holds a bat loosely and bunts a ball. Express your understanding of momentum conservation by filling in the tables below.

Chapter 10 Vocab Review 8th Grade.

Mass and Weight Standards 1.3.

Physical Science Ms. Pollock

Friction and Gravity Chapter 10 Section 2.

Newton’s Laws of Motion Chapters 2,3,6,7

Connecting Motion with Forces

Friction and Gravity.

Gravitational Forces Physical Science.

Forces and Motion FINAL JEOPARDY Go To Score Card Forces Gravity

Forces and Motion FINAL JEOPARDY Go To Score Card Forces Gravity

Chapter 3 Notes Pages

Vocabulary Owen Graham.

Forces and Motion FINAL JEOPARDY Go To Score Card Forces Gravity

Forces and Motion FINAL JEOPARDY Go To Score Card Forces Gravity

Forces and Motion FINAL JEOPARDY Go To Score Card Forces Gravity

Presentation transcript:

Solving Physical Science Word Problems: Write down all given information Write the formula you need to solve the problem. Substitute the numbers in the equation. Show all operations and solve. Answers should include both numbers and units. Circle the answer.

M = 400 kg A = 8 m/s/s F = M ∙ A F = 400 kg ∙ 8 m/s/s F = 3200 N Brandon pushes a 400 kg rock until it accelerates at the rate of 8 m/s 2. What is the force required to produce this acceleration?

F→ = 150 N M = 50 kg If the box does not move, F← = 150 N Riley exerts a force of 150 N on a 50 kg box. The box doesn’t move. How much force does the box exert on Riley?

A force of 25 N acts upon a 5 kg block. Calculate the acceleration. F = 25N = 25 kg ∙m/s/s M = 5 kg A = F ÷ M A = 25 ÷ 5 A = 5 m/s/s

No air resistance means the object is in “free fall”. Free fall means the only force acting on the object is the force of gravity (its weight). The acceleration due to gravity is 9.8 m/s/s. An object of mass 45 kg is in free fall in a vacuum where there is no air resistance. Determine the acceleration of the object.

Calculate the acceleration if... Kiana pulls a 6 kg block pulled across a table with a force of 40 Newtons. A frictional force of 4 N opposes the motion. F = 40 N → F = 4 N ← Net Force = 40 N – 4 N = 36 N M = 6 kg A = F ÷ M A = 36 N ÷ 6 kg A = 6 m/s/s

M = 65kg g = 9.8 m/s/s Weight = m ∙ g Weight = 65 ∙ 9.8 Weight = 637 N 1 lb. = 4.4N Weight = 637 /4.4 Weight = LBS. Tyler has a mass of 65kg. What is Tyler’s weight in Newtons? In pounds?

Now it’s your turn!!!!

Marcus would first have to overcome the force of gravity on the ball… Force of gravity on the ball= m ∙ g = 15 ∙ 9.8 m/s/s F ↓ = 147 N F ↑ = m ∙ a = 15kg ∙ 3m/s/s F ↑ = 45 N Total F needed to throw ball into the air = F↑ + F↓ = 45N N = 192N What is the force required for Marcus to throw a 15 kg ball up into the air at 3 m/s/s?

Acceleration due to gravity = 9.8 m/s/s M = 80 kg Force of gravity = F↓ F↓ = M ∙ g = 80 ∙ 9.8 F↓ = 784 N Air Resistance = F↑ Terminal Velocity occurs when force of gravity = air resistance (F↑ = F↓) F↑ = 784 N Josh, who has a mass of 80 kg, is extremely clumsy and fell out of an airplane during training. OH NO!!! He reaches terminal velocity before he can be rescued. What is the force of the air resistance?

M = 30 kg F↑ (air resistance) = 50 N F ↓ = weight Weight = m ∙ g Weight = 30 kg ∙ 9.8 m/s/s Weight = 294 N Net Force = Weight – Air Resistance Net Force = F ↓ - F↑ Net Force = 294 N – 50 N Net Force = 244 N An object with a mass of 30 kg is falling in air and experiences a force due to air resistance of 50 newtons. A = F ÷ M, But first you have to calculate the net force.

A = F ÷ M A = 244 N ÷ 30 kg A = 8.13 m/s/s An object with a mass of 30 kg is falling in air and experiences a force due to air resistance of 50 Newtons.

M = 40 kg F→ = 200N A = F ÷ M = 200 ÷ 40 A = 5 m/s/s M = 40kg + 40Kg = 80kg F→ = 200N A = F ÷ M = 200 ÷ 80 A = 2.5 m/s/s A 40 kg cannon is pushed with a force of 200 N. What is its acceleration? If you put a 40 kg cannonball into the cannon and push it with the same force, how much does it accelerate?

Now it’s your turn!!!!