physics subject about how machines work

Part 1 : Machines and work Many people believe that machines put out more work than we put in and do not realize that machines simply change the form of the work we do. Convince these people by answering the following

Describe What is a machine? How are work, energy and machines related?

Describe what is the machine efficiency and how it can be calculated?

How can machines change the form of work and make it easier?

Compare and contrast simple machines and compound(complex) machines.

Give examples describing at least three types of simple machines

part 2: Machines in human body : Hypothesize how can human body parts act as simple or compound machines

Can the human body parts function as a compound or simple machine? Justify your thoughts ( use visuals , models …etc.)

Search the physics behind prosthetics and then Write your opinion to evaluate the fairness of race in which runners that have both natural legs compete with double and single amputees.

Part 3 : Describe/Design/or build a model of a machine

It is the time to travel virtually. Ride the time machine and go back to the past (to ancient ages) Choose ( question 1 or 2 to answer )

Describe which machines did find? And how they were used ? OR

Travel to life without machines what are the life aspects that would be affected?

[login to view URL] all your knowledge about machines and discuss/or design/or build a machine that can help you and help your society

Describe your machine and make an argument that your model is representative of real, useful device/s

You should be limited only by your imaginations.

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