Section 1 (cont.) Power.

Slides:



Advertisements
Similar presentations
Section 8.5: Power. Power ≡ Rate at which work W is done or rate at which energy E is transformed: Instantaneous Power: P ≡ (dE/dt) = (dW/dt) For work.
Advertisements

Work, Power, and Machines
Section 2.6 Question 1. Section 2.6 Answer 1 Section 2.6 Question 2.
Work, Power & Simple Machines
Key Concepts  When is work done on an object?  How do you determine the work done on an object?  What is power? Key Terms  Work  Joule  power.
You are Stronger than you seem, Braver than you believe, and Smarter than you think you are. Use the gifts that you have been given.
$100 $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 $200 $300.
1 Work and Power. 2 What is work?  Definition: energy transferred by a _____________ to move an object a _____________ (when both the force and the motion.
POWER Power – Power = P = ___=___ Units = ( ) = ____ = ___ Sample Problem: A crane lifts an 8000 N beam 75 m to the top of a building in 30 s. How much.
$100 $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 $200 $300.
Work, Power & Mechanical Advantage. What is Work?? Work is only done when a force causes a change in the position or the motion of an object The motion.
1) Weights and Measure Find the abbreviation for a Stere (cubic meter). How many cubic yards are in one Stere?
 Work – the product of force and the distance traveled  The unit of Work is a Joule (J)  Work= Force × distance W = F ● d Distance (m) Force (N) Work.
Power is the rate at which work is done.
Work & Power Mr. Skirbst Physical Science Topic 05.
A force of 15 newtons is used to push a box along the floor a distance of 3 meters. How much work was done in this situation?
DAILY QUESTION January 26, What is the SI unit for work?
WHAT IS WORK?  transfer of energy to a body by application of a force that causes body to move in direction of force.  W = F  d SI units:  joules.
Power Chapter What determines the amount of work done by an object? The force on the object times its displacement. Time does not affect the amount.
 Work – the product of force and the distance traveled  The unit of Work is a Joule (J)  Work= Force × distance W = F ● d Distance (m) Force (N) Work.
Lifts- From Low Tech to High Tech. Wheelchair ramps At Home At Work or School For the Car.
POWER The rate at which work is done The rate at which work is done The amount of work done in a unit of time The amount of work done in a unit of time.
What is it? How is it calculated? How is it measured? Work.
Power, Horsepower and Watts
“Do Now” for Wednesday! Draw a balanced and an unbalanced force. Illustrate the net force in each drawing.
In terms of motion, what does energy allow you to do? Units?
Horses have it… Mechanical Power. power: the rate at which… –WORK IS DONE –ENERGY IS PRODUCED OR CONSUMED –unit: WATT Definitions Equation.
Thursday, February 18 th Agenda  Pass Back/Go Over Chapter 7 Tests  Begin Chapter 8: Work, Power, and Machines  Work, joules, power, watts  In-class.
Work = Force x Distance W= F x d Work is a force exerted across a distance ! A transfer of energy!
Section 14 Work, Power, and Energy. More Power!!!!! What does he mean?
Calculating Work. Work = force x distance W=f x d Unit of Measurement for Work is Joules Unit of Measurement for Force is Newtons Unit of Measurement.
Power. Rate at which work is done P = ΔW t Measured in Watts (W) Usually seen as kW – kilowatts Horsepower (746 Watts) P = Power (Watts) ΔW = work done.
How they are defined by science
Hasn’t it ALL been work so far? Mr. Fox’s 8 th Grade Science Class.
Chapter 13 Energy and Work Section 4 Power. Power Power is the rate at which work is done or the amount of work done in a unit of time. Power is the rate.
In this section you will use the equation to calculate work done use the equation to calculate kinetic energy solve simple energy interchange problems.
Physics Section 5.4 Define “power” Power- is the rate at which work is done or energy is transformed. P = W ∆t P = power (watts) W = work (J) t = time.
Do Now: 1. A 9000 Newton car is traveling on dry concrete at constant velocity. Calculate the force required to keep it moving.
Work , Power and Efficiency
35 + (-5) 9 – – (-12) Write as a decimal. Write as a percent.
Work (variable distance)
Task (1) What is gravitational potential energy, Eg?
Measuring Energy and power
Work and Power Calculations
Work, Power & Energy.
Essential Question: What are the different types of energy?
Work = when a force is applied on an object and it moves in the direction of the force.
Notes 10.2: Power and efficiency
Power.
Work and Power.
Work Power and Machines
Work notes: In science, ‘work’ has a specific meaning
Work, Power, and Mechanical Advantage Review
Power In which situation would you tire more quickly?
Work and Power notes: In science, ‘work’ has a specific meaning
Work, Energy and Power.
Work.
Work and Power.
Work and Power Calculations
Horses have it… Mechanical Power.
12.1 Notes, Continued I. Power A. The rate at which work is done.
Is work vector or scalar.
Energy, Work, and Power.
Work, Power, and Machines
Work.
Work & Power.



Presentation transcript:

Section 1 (cont.) Power

I. Power A. The rate at which work is done.

B. Power is measured in Watts (W). Examples: A medium-sized car engine is rated at 50,000 to 100,000 Watts A person who weighs 220 pounds climbing a 10 foot high ladder in 5 seconds is doing work at a rate of about 600 Watts

It takes 100,000 J of work to lift an elevator 18 meters It takes 100,000 J of work to lift an elevator 18 meters. If this is done in 20 seconds, what is the average power of the elevator during this time? GIVEN: WORK: W = 100,000 J t = 20 s P = ? work time P = P W t 100,000 J 20 s P = P = 5,000 W

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2025 SlidePlayer.com. Inc. All rights reserved.