Friction
Forces
Balanced or Unbalanced?
Newton's Laws
The Design Process
100
Name the type of friction.
You are pushing against a wall and it won't move.
Static Friction
100
A push or a pull is called a ___________________ .
force
100
If the net force equals zero, is it balanced or unbalanced?
balanced
100
This was the law that was shown through the balloon design challenge.
What is Newton's 3rd Law?
100
This was the mechanism that the guy from MIT in the design process intro video made.
What is a volleyball launcher?
200
This was the source of friction in our balloon design challenge.
What is the direct contact and interaction between the inside surface of the straw and the string?
200
Friction is a force that acts _____________ the motion of an object.
against
200
If there is movement, is the force balanced or unbalanced?
unbalanced
200
This famous equation represents Newton's 2nd Law.
What is F = ma?
200
This is an adjective to describe the nature of the design process.
What is iterative?
300
These 3 factors influence friction.
What is material, weight, and surface area?
300
All forces have ______________ and _________. They are also called by this mathematical term.
magnitude + direction; vector
300
The Indigo and the Navy Teams are having a tug of war. The Navy Team pulls 25 N left and the Indigo Team pulls 47 N right. What is the net force? (Remember to give the direction also.) Is it balanced or unbalanced?
22N Right Unbalanced
300
This law states that for every action (force) in nature there is an _______ and _________ reaction.
What is Newton's 3rd Law; equal + opposite?
300
This is the name of the test structure built during the design process.
What is the prototype?
400
This is the greatest type of friction.
What is static friction?
400
The unit used to label force is called ________________.
Newtons
400
You and your brother are moving a couch for your mom. You move the couch at 65 N Right and your brother moves the couch at 60 N Right. What is the net force? (Remember to include a direction in your answer.) Is the net force balanced or unbalanced?
125 N Right
Unbalanced
400
This is Newton's 1st law.
What is an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force?
400
This is how design problems are identified.
What is through careful observation?
500
This is the physical phenomenon that is responsible for describing the microscopic nature of friction.
What is molecular attraction?
500
The combination of forces on an object is called the _____________________________.
Net force
500
Draw the free body diagrm of the following situation:
What is:
500
The baseball went farther than the basketball when your classmate hit them with an aluminum bat. This is an example of which law of motion?
What is Newton's Second Law of Motion?
500
This is what prototypes are often built out of and the reason why.
What is Cardboard and because it is inexpensive and easy to start over and modify throughout the iterative process involved in designing solutions to everyday problems?