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Ch.10 Work & Machine

When a force changes the motion of an object Work
A machine with few or no moving parts Simple Machine
Two or more simple machiens put together Compound Machine
The ability to do work Energy
A ball player using a bat to hit a ball is an example of ... Work
Why does a rock on the hill have energy? It can fall down the hill
How does a machine make work easier? It lets you change the direction of a force
How are a pulley and a lever the same? both help pull something up
Why is a winding road easier to travel up than a hill straight up? the winding road won't be so hard to pedal even though it is longer.
What simple machine are fish like as they swim through the water? a wedge
What happens as your leg kicks a soccer ball? Leg stops moving as fast
Why does your leg stop moving when it kicks a soccer ball? the force goes into the ball and the ball starts moving
You have a heavy pack and need to climb stairs, would you choose the steep stairs with few steps or the stairs with more steps but less steep? More stairs would be easier because not as steep.
Why does a bike coast down a hill? The bike has energy because it is going down hill.
What are the 6 simple machines we talked about? ramp, pulley, lever, wheel and axle, screw and wedge.
http://www.mikids.com/Smachines.htm Go to the website and explore simple machines be able to identify pictures
What is a simple machine with a lever and a fulcrum Wheelbarrow
Created by: CPS3rd