The idea that an object in motion will stay in motion unless an unbalanced force acts upon it is...
A push or pull that causes an object to start moving, stop moving, or change direction is called ...
________ is the force that keeps us on Earth, it pulls objects towards the center of the Earth.
What is friction?
What force holds the moon in its orbit around Earth?
_________ is how far something moves over a certain amount of time.
Raising a flag uses which of the following simple machines?
Why do we use simple machines?
What type of simple machine is a crowbar?
Which type of simple machine would you need if you were pushing someone in a wheelchair?
Think about a spiral staircase. Which simple machine can you compare it to? Explain.
You do not use a much _________ when you use simple machines.
Choose one of the simple machines we have studied (pulley, screw, inclined plane, lever, wheel and axle, wedge)
and explain how it makes our work easier.