What is her power output in lifting the child. A box is pushed across the floor for a distance of 5 meters with a force of 50 newtons in 5 seconds.
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Work force x distance.
Work power and energy worksheet answers pdf. A 60 kg box rests on a horizontal frictionless surface. B the displacement is in the same direction as the force of friction. Calculate the work done by a 2 4 n force pushing a 400.
What is doing the work. In physics power is associated with energy and has a precise meaning. Calculate the work done by a 47 n force pushing a pencil 0 26 m.
Be sure to show all calculation work in the space provided. Work and power worksheet answer each question by calculating for the missing variable. Calculate the work done by a 47 n force pushing a 0 025 kg pencil 0 25 m against a force of 23 n.
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. In some cases this conversion can be done efficiently such as between kinetic energy and electrical energy. If the driver wants to go further will the amount of work increase or decrease.
Physics worksheet work and energy section. Find the work done by the girl. If you do 2 7 j.
Physics work and energy worksheet solutions part i 1. You must exert a force of 4 5 n on a book to slide it across a table. G sandwich across a table 0 75 m wide.
Work power energy worksheet. How much work is done. How much work did she do.
Download work energy power problems with solutions pdf 497 kb equella is a shared content repository that organizations can use to easily track and reuse content. How much work is done. A go cart engine applies a force of 888n and moves the cart forward 22m.
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. What is the power. Work work and energy are the same thing.
Do you need a bigger engine to go further. A girl pushes on the box with a force of 15 n 5 meters to the right. It is the rate of work done or rate of energy transfer.
A woman lifts a 300 newton child a distance of 1 5 meters in 0 75 seconds. What was her power. Energy can t be created or destroyed it can only be changed from one type into another type.
We put on a bigger engine 1111n but the cart still moves forward 22m. In fact any type of energy can be converted into any other type of energy. A force of 10 n is applied to a 2 0 kg mass at rest on which the force of friction is 4 0 n.
W f x d. This oer repository is a collection of free resources provided by equella. We call this rule conservation of energy.
Please circle your final answer and be sure it has the proper label. Power is measured in joules per second j s r o watts w and is worked out using the formula.
When a force moves. Work power and energy worksheet. Consider two blocks stacked one above the other on a table.
The concept of power is concerned with how rapidly energy is being transferred or transformed when work is done.
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