Variables
What is an independent variable?
Variable/condition chosen to be investigated. "What I decide to change or test."
What is force?
A push or pull.
When mass increases motion-
What is criteria?
The goals we want the solution to meet as much as possible. (Judge or make decisions, want)
What is stable?
When the sum of the forces on an individual object add up to zero.
What is a dependent variable?
The measured results of the investigation. "This is the variable that depends on what I changed."
What are force pairs?
The equal and opposite forces always present when two objects are in contact. The objects push together equally or pull apart equally. For example, a book on a table or a balloon on a string. Shown as a dot at the contact of two objects, with equal and opposite vector arrows.
When mass decreases motion-
Increases
What are constraints?
Things that if they are not met, the solution is not considered acceptable. (must have, limitations, need)
What are unbalanced forces?
When the sum of the forces on an individual object do not add up to zero.
What is a control/constant variable?
Variables/conditions kept the same in an investigation.
True or False- Changing force applied to an object changes the distance it travels.
True
How does the mass of a object affect collisions?
The higher the mass, the more damage.
A helmet has to be adjustable, Criteria or Constraint?
Constraint
What are balanced forces?
When the sum of the forces on an individual object add up to zero.
How many independent variables do you need in an investigation?
1
If the force on the object is constant, what is the relationship in mass and acceleration.
Yes, mass divided by force equals acceleration.
How does the speed of an object affect collisions.
The faster the speed, The more damage.
The more colors the helmet comes in the better, Criteria or Constraint?
Criteria
2 people playing tug of war have equal strength. Which side will the rope move to?
It won't move to either side. It will be a tie. (balanced forces)
What is a fair investigation?
An investigation or experiment in which the variables are carefully chosen and controlled. A fair investigation can be trusted to yield accurate results.
Can force change the size and shape of an object?
Yes
What is Mass?
The amount of matter in a object.
The helmet needs to survive a 10 foot drop, Criteria or Constraint?
Constraint
I am pushing a crate with 100 N on the right side and my friend is pushing with 75 N on the left side. Which side will it move?
Left.