Presentation is loading. Please wait.

Presentation is loading. Please wait.

KE & PE PROBLEMS.

Published byGerald Durling Modified over 10 years ago

Similar presentations

Presentation on theme: "KE & PE PROBLEMS."— Presentation transcript:

1 KE & PE PROBLEMS

2 John has an object suspended in the air
John has an object suspended in the air. It has a mass of 50 kg and is 50 m above the ground. How much work would the object do if it was dropped? Gravity is 9.8 m/s2.

3 Mrs. Jacobs dropped an object from 10 m
Mrs. Jacobs dropped an object from 10 m. She knows it did 50 joules of work and gravity is 9.8 m/s2. How much was its mass?

4 Thomas dropped an 20 kg object
Thomas dropped an 20 kg object. He knows it did 120 joules of work and gravity is 9.8 m/s2. How high was the object when it was dropped?

5 What is the mass of a man running at 4
What is the mass of a man running at 4.34 m/s if he has a kinetic energy of joules?

6 What is the speed of a 63.8 kg woman running with a kinetic energy of 1156 joules?

7 What is the speed of a 140.1 kg woman running with a kinetic energy of 1307 joules?

8 What is the mass of a man running at 3
What is the mass of a man running at 3.26 m/s if he has a kinetic energy of joules

9

Download ppt "KE & PE PROBLEMS."

Similar presentations

Chapter 7 Conservation of Energy

Chapter 7 Conservation of Energy
Review for Energy, Work, Power Test. Work is always done ? What is the definition of work? A force moves an object in the direction of the force.

Review for Energy, Work, Power Test. Work is always done ? What is the definition of work? A force moves an object in the direction of the force.
Work Energy Power Review. Work is done when 1.the displacement is not zero and a force is parallel to the displacement 2.the displacement is zero. 3.the.

Work Energy Power Review. Work is done when 1.the displacement is not zero and a force is parallel to the displacement 2.the displacement is zero. 3.the.
Physics Energy.

Physics Energy.
Types of Energy Principles of Physics.

Types of Energy Principles of Physics.
KS4 Kinetic and Potential energy

KS4 Kinetic and Potential energy
The ability to do work Work = Force x distance.

The ability to do work Work = Force x distance.
MIMTY 4/09/10 Why does it take energy to pick something up and stick it in a high place? MIMTY.

MIMTY 4/09/10 Why does it take energy to pick something up and stick it in a high place? MIMTY.
What is energy? Energy measures the ability for things to change themselves or to cause change in other things. A joule (J) is the S.I. unit of measurement.

What is energy? Energy measures the ability for things to change themselves or to cause change in other things. A joule (J) is the S.I. unit of measurement.
Work, Potential Energy, Kinetic Energy & Power

Work, Potential Energy, Kinetic Energy & Power
Work, Energy & Power Honors Physics. There are many different TYPES of Energy. Energy is expressed in JOULES (J) 4.19 J = 1 calorie Energy can be expressed.

Work, Energy & Power Honors Physics. There are many different TYPES of Energy. Energy is expressed in JOULES (J) 4.19 J = 1 calorie Energy can be expressed.
Energy Conversion of Energy Forms of Energy Energy Work.

Energy Conversion of Energy Forms of Energy Energy Work.
Energy Kinetic and Potential What is Energy? The ability to do work. Work = Force X Distance Forms of Energy: ElectricalMechanical ThermalRadiant GravitationalNuclear.

Energy Kinetic and Potential What is Energy? The ability to do work. Work = Force X Distance Forms of Energy: ElectricalMechanical ThermalRadiant GravitationalNuclear.
THE NATURE OF ENERGY IPC Notes. ENERGY Energy is involved in every change that occurs Energy can be found in many different forms ex) thermal, electrical,

THE NATURE OF ENERGY IPC Notes. ENERGY Energy is involved in every change that occurs Energy can be found in many different forms ex) thermal, electrical,
By-Tanmaye Gupta ENERGY IGCSE PHYSICS What is Energy? Energy is the capacity to do work. The S.I. unit of energy is Joules 1Joule = 10 7 erg

By-Tanmaye Gupta ENERGY IGCSE PHYSICS What is Energy? Energy is the capacity to do work. The S.I. unit of energy is Joules 1Joule = 10 7 erg
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.

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 7: Work and Energy (Ewen et al. 2005) Objectives: Related kinetic and potential energy to the law of conservation of mechanical energy. Related.

Chapter 7: Work and Energy (Ewen et al. 2005) Objectives: Related kinetic and potential energy to the law of conservation of mechanical energy. Related.
Unit 5 – Lecture 1. Energy Energy – the ability to do work the ability to cause change measured in joules symbol: [as in.. E = mc 2 ] E.

Unit 5 – Lecture 1. Energy Energy – the ability to do work the ability to cause change measured in joules symbol: [as in.. E = mc 2 ] E.
The Work Energy Theorem Up to this point we have learned Kinematics and Newton's Laws. Let 's see what happens when we apply BOTH to our new formula for.

The Work Energy Theorem Up to this point we have learned Kinematics and Newton's Laws. Let 's see what happens when we apply BOTH to our new formula for.
Kinetic and Gravitational Potential Energy

Kinetic and Gravitational Potential Energy

Similar presentations

Ads by Google