Work energy and power page. It can also be defined as the rate of change of energy.
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When a force moves.
Work power and energy worksheet for grade 8 pdf. P 2 07 104watts 2 a 0 45 kg book sits on a shelf 1 80 m above the floor. Rate of doing work is called power. Three class periods program description much of our success as an industrialized society stems from our ability to harness energy.
Mathematically work done force distance. Is created by the motion ot the particles within 4 the dim light bulb s strength was one down 2 measures the power ot an engine. 6 energy work and power conversion of energy we have already explained how kinetic energy and gravitational potential energy can be converted backwards and forwards.
Energy can t be created or destroyed it can only be changed from one type into another type. How much power did he use. Work work and energy are the same thing.
Physical science lesson duration. Steven higginbotham created date. We call this rule conservation of energy.
Worksheet work power and energy sections 9 1 9 6 1 what is the power of a crane that does 5 80 x 104 j of work in 2 80 s. In fact any type of energy can be converted into any other type of energy. The concept of power is concerned with how rapidly energy is being transferred or transformed when work is done.
Use the following diagram for questions 10 and 11. It is the rate of work done or rate of energy transfer. 9 computer screens are lit through.
Explore the many different forms energy can take sound heat light chemical and nuclear. The capacity of doing work is called energy. In some cases this conversion can be done efficiently such as between kinetic energy and electrical energy.
Mathematically energy mass x gravity x. Rkhedrick last modified by. Reverberated through the hall.
5 a bass drum s 6 the states that matter is made ot particles. Energy work and power teacher s guide grade level. Consider a 10 kg mass sitting on the ramp shown to the right.
E p 7 95j. In physics power is associated with energy and has a precise meaning. Power is measured in joules per second j s r o watts w and is worked out using the formula.
Which situation is an example of increasing potential energy. Work and energy grade 8 print answer key pdf take now schedule copy. Work power and energy worksheet author.
A calculate the gravitational potential energy of the book relative to the floor. Causes waves to bend 8 a loud noise has a high count. Print test only the test content will print name.
3 when a physicist is talking about work he mainly talks about a force causing a displacement of an object in the same action of line. Work power and energy 2 work if an object or system such as your body exerts a force on an object and that force causes the object s position to change you are doing work on the object. Work energy and power in this section of the transport unit we will look at the energy changes that take place when a force acts upon an object.
Work is said to be done when the force is applied on a body and the body covers a certain distance.
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