Forces
How many forces are there?
Eight
How many forces are involved in flight?
Four
Are all metal objects magnetic?
No
Who invented the laws of motion?
Sir Isaac Newton
What force holds us down to Earth and keeps our planets in orbit?
Gravity
What force pushes the plane up?
Lift
What type of magnet can be turned on and off?
Electromagnet
An object at ______ will stay at rest unless acted on by an unbalanced force.
Rest
What are the two most common forces?
Gravity and friction
What force pulls the plane down?
Weight or gravity
What is the name of the strongest magnet in the world?
Neodymium
An object in _____ will stay in motion unless acted on by an unbalanced force.
Motion
What type of force uses push and pull?
Applied force
What force pulls back on the plane?
Drag
What three types of metal are magnetic?
Iron, nickel, and cobalt
The ____ of an object determines the amount of _____ needed to accelerate the object.
Mass and Force
What force is stronger than gravity?
Magnetism
What force pushes the plane forward?
Thrust
The North pole and South pole on a magnet will do what to each other?
Attract
For every _____ there is an equal and opposite _________.
Action and Reaction