Calculating Potential and Kinetic Energy Follow the steps.

Slides:

Advertisements

Similar presentations

Energy Transformations. You have a tennis ball in your hand. You are holding it at a height of 2 meters 1.Describe what will happen when the ball is dropped.

Advertisements

Warm up problem Frictionless ramp Mass: 5 kg. Angle of ramp: 30 degrees Length of ramp: 20 meters V f = ?

Energy Problems Review for Potential energy, Kinetic energy, Total Energy work, power.

Work and Energy Quiz Show your work on a separate sheet of paper and staple your work to the back.

Conservation of Energy

Energy Chapter 5. What is energy? The property of an object that allows it to produce a change in itself or its environment. The property of an object.

Energy Chapter 5. Mechanical Energy Energy due to movement or position. Energy due to movement or position. Kinetic Energy – energy of motion Kinetic.

Fall Final Review WKS: WORD PROBLEMS Part II. 1. A car travels at a constant speed of 15 m/s for 10 seconds. How far did it go?

Fall Final Review WKS: WORD PROBLEMS. Average Speed 1. A rock is dropped from the top of a tall cliff 9 meters above the ground. The ball falls freely.

Physics 12 – Review so Far Day 1.Please form a group of 2-3, no more no less 2.Collect a whiteboard, pens, and erasers 3.Answer the following questions.

LESSON 3 – KE and PE (4.2) LEARNING OUTCOMES: State and be able to use the equation: change in gravitational potential energy (PE) = mass (m) x gravitational.

Chapter 12: Energy & Work Unit Integrated Science I.

Writing prompt – 10/13/06 IN COMPLETE SENTENCES: Write down the order of changes in energy that happens when plucking a guitar string. (longest chain of.

Chapter 4. The nature of energy Energy: The ability to do work or cause change All energy involves either motion or position Where are we using energy.

Kinetic Energy A moving object has energy because of its motion. This energy is called kinetic energy.

$100 $400 $300 $200 $400 $200 $100$100 $400 $200$200 $500$500 $300 $200 $500 $100 $300 $100 $300 $500 $300 $400$400 $500.

How much work does a 154 lb. student do when climbing a flight of stairs that are 6 meters in height and 30 meters in length? If the stairs are climbed.

Formative Assessment. FA6.2: 1. A 5.20 kg object speeds up from 3.10 m/s to 4.20 m/s. What is the change in kinetic energy? (20.9 J)

Kinetic energy L.O.:  Calculate kinetic energy.  Calculate the speed of an object applying the principle of energy conservation.

Physics Review Game: Chapter 4 Mr. Vannucci’s Class.

Work and Energy. What is energy? Defined as “ability to do work” But, what is work? Work = Force * displacement When work is done, energy is transferred.

Roller coasters! LO: To describe the transfer between potential and kinetic energy True or false: 1)The equation to calculate Power is Power = Work ÷Time.

Energy  Change Requires Energy  What is energy? –The ability to cause change or do work  Is energy scalar or vector?

Conservation of Energy System Energy of Gravitational Interaction -- Gravitational Potential Energy If the system contains Earth and an object (or objects),

Energy and Work. Energy Energy is the ability to change or cause change. If something has no energy, there can be no change.

Kinetic and Potential Energy

The ability to make something happen, to create a change

Chapter 5.2. What do you think? What is meant when scientists say a quantity is conserved? Describe examples of quantities that are conserved. Are they.

Work, Power & Energy How do they relate? (Stone, Ebener, Watkins)

Energy Physics 4 th Six Weeks. What is Energy? Energy is defined as the ability to produce a force. Energy is also defined as the ability to cause a change.

Ep=mgh..  Ep=mgh  Ep; Potential Energy  m; mass (kg)  g; gravity (N)  h; height (m)

DAILY QUESTION January 28, What is potential energy?

Potential and Kinetic Energy How is all energy divided? Potential Energy Kinetic Energy All Energy Gravitation Potential Energy Elastic Potential Energy.

Ch 4 notes. Work Press down on your desk with your hand. Are you doing any work? work – force applied through a distance The transfer of energy when a.

Vocabulary Work Problems Potential Energy Problems Kinetic Energy Problems Extra Questions

Energy Review: Chapter 5 Section 1, Pages Kinetic Energy (KE) Energy of _________________________________________ If an object is ___________________________.

1 Ch. 5 Work and Energy Review. 2 In which of the following actions is work not being done on the underlined object? A. A hammer strikes the head of a.

Potential and Kinetic Energy Aim: How can we determine the different types of energy an object has?

Work & Energy Review.

Do Now: 1. You push a crate up a ramp with a force of 10 N, but despite your pushing the crate slides 4 m down the ramp. How much work did you do? 2. A.

Mechanical Energy -Potential & Kinetic Energy

Energy and Work.

Energy and Work.

IS Jeopardy Work Power Energy Misc Potpourri

Calculating Average Speed and Energy

Energy and Work.

Energy Ch. 4-1.

Chapter 5.3 Review.

Conservation of Energy

Let’s Play! Please listen carefully and think before answering.

Think Pair Share As the girl swings back and forth, describe her potential energy and kinetic energy at A, B, and C. A C B.

Energy Energy: the ability to cause change. Measured in Joules (J)

Potential Energy.

6 8 5 Energy Breakout Solutions 750 J 1500 W 225 N 2700 J

Introduction to Energy

6 8 5 Energy Breakout Solutions 750 J 1500 W 225 N 2700 J

Chapter 7 Daily Questions

Baseline (Aiming for 4): State the factors

Title: Kinetic and elastic energy

Kinetic and Potential Energy

CHAPTER 15: ENERGY!.

Mechanical Energy.

Group 1 Group 2 Group 3 Group 4 61 m 35 m 52 m 35 m 63 m 40 m 54 m

Scavenger Hunt Solutions

Group 1 Group 2 Group 3 Group 4 61 m 35 m 52 m 35 m 63 m 40 m 54 m

Energy and Momentum.

7.3 Conservation of Energy

Presentation transcript:

Calculating Potential and Kinetic Energy Follow the steps

Equations Potential Energy (E p )=Weight x Height Or: Kinetic Energy (E k )=1/2 (mass x velocity 2 ) SHOW YOUR WORK FOR EACH STEP EPEP Wt. Ht.

Let’s calculate some SIMPLE kinetic energy equations: What is the kinetic energy of a 0.5kg soccer ball that is traveling 3 m/s? E k = ½ (m x v 2 ) E k = ½ (.5 x 3 2 ) E k = ½ (.5 x 9) E k = ½ (4.5) E k =2.25 J What is the kinetic energy of a 1 kg strawberry pie that is thrown across the lunch room with a speed of 2 m/s? E k = ½ (m x v 2 ) E k = ½ (1 x 2 2 ) E k = ½ (1 x 4) E k = ½ (4) E k =2 J

A shot putter heaves a 8 kg shot with a velocity of 7.5 m/s. What is the form of energy? ______________ Calculate it. E k = ½ (m X v 2 ) E k = ½ (8 x 7.5 2) E k = ½ (8 x 56.25) E k = ½ (450) E k = 225 A jogger with a mass of 65 kg is traveling at a speed of 2.5 m/s. What is the form of energy? ________________ Calculate it. E k = ½ (m X v 2 ) E k = ½ (65 X 2.5 2) E k = ½ (65 x 6.25) E k = ½ (406.25) E k =

An apple in a tree has a mass of 45 kg and is hanging in a tree 22 meters above the ground. The apple has _____________ energy. Calculate it. E p = Wt. X Ht. E p = 45kg x 22m =2025 J The same apple falls from the tree at 4 m/s. What type of energy is described? _______________ Calculate it. E k =1/2 (m x v 2 ) E k = ½ (45 x 4 2 ) E k = ½ (45 x 16) E k = ½ (720) E k = 360 J

Determine the potential energy of roller coaster that has a first hill of 2000m tall and coaster Cars with a mass of 625 kg. E p = Wt. x Ht. E p = 625 x 2000 E p = 1,250,000 J If the roller coaster is traveling at a speed of 20 m/s at the bottom of the first hill, determine the coaster’s kinetic energy. E k = ½ (m x v 2) E k = ½ (625 x 20 2) E k = ½ (625 x 400) E k = ½ (250,000) E k = 125,000 J Thinking question: What would happen to the kinetic energy of the coaster if the mass of the coaster car doubled?

CHALLENGE question! A bike rider approaches a hill with a speed of 8.5 m/s. The total mass of the rider and the bike is 85 kg. 1.What is the kinetic energy of the bike and rider? 2.The rider coasts up the hill. Assuming there is no friction, at what height will the bike come to a stop?