Free Body Diagrams
Draw a free body diagram of a Laptop that is sitting on a desk.
What force pulls objects downward?
What is Newton's First Law of Motion?
The long one
When an object has balanced forces acting on it what will be the result?
No acceleration.
The variable being changed by the scientist is called the _____________ variable. (The cause)
Independent Variable
Draw a free body diagram of a car speeding up after being at rest.
What is a force?
A push or a pull.
What is Newton's Second Law of Motion?
F=MA
If an object is experiencing an unbalanced net force, how will it respond?
The variable that may be affected by the independent variable.
Dependent variable
Draw a free body diagram of a refrigerator that a man is pushing, but it won't move.
What force usually opposes motion.
Friction
A 5 kg object is accelerating by 4 m/s^2. How much net force must be acting on the object?
20 N
A car is driving down the road at a constant speed. Is the net force acting on the car balanced or unbalanced?
balanced
What is the group called that does not receive the independent variable?
Control Group
Draw a free body diagram of a car slowing down before it comes to a stop.
What is an applied force?
A force applied by another object or person.
An 8 kg object has 8 N net force acting on it. How much acceleration is it experiencing?
1 m/s^2
A man on a skateboard is riding down a hill at a constant speed. Is the net force acting on the skateboard balanced or unbalanced?
Balanced
If an increase in the independent variable increases the dependent variable, what kind of correlation do they have?
Positive Correlation
Draw a free body diagram of a car driving down the highway at a constant speed.
What force is created in response to another force and is equal in magnitude but goes in the opposite direction of the original force?
action-reaction forces
A hockey puck is struck in a magical space that has absolutely no forces acting on it. What will the puck do?
Continue to slide forever.
Forces acting in opposite directions that are not equal in magnitude.
Max is going to study the affect that temperature has on crystal growth. In this study, which is the independent variable and which is the dependent variable.
Independent-temperature
Dependent-crystal growth