General
When a force acts on an object and motion changes
What is work?
An example of a lever is __________.
any plausible answer
Here at school, you could see a pulley on a ______________.
What is flagpole?
other plausible answer
You use a force to change the ________________ of an object.
direction
size
colour
What is direction?
You create a screw when you wrap on inclined plane into a _______________ around a pole.
What is spiral?
other plausible answer
The lever has one moving part
True or false
what is true?
Two inclined planes placed back to back make this simple machine.
What is a wedge?