Scientific Method
There is one student who is a member of Dr. V's dream team. This statement is an example of a(n) ______________ observation.
Quantitative
An object that is used to determine the motion of another objects us called a(n) ______________
Reference Point
In order for the forces on an object to be balanced, the net force must equal _________ N
Zero
What is the ONLY force acting on an object that is free falling?
Gravity
What units are used to measure energy?
Joules (J)
"What affect does Diego moving to LA have on the emotions of his ex-girlfriend." What is the DEPENDENT VARIABLE of that question?
The emotions of the ex-girlfriend.
State BOTH PARTS of Newton's first law of Motion (Law of Inertia).
Objects at rest will stay at rest and objects on motion will stay in motion until an unbalanced force acts on it.
When labelling a force, you most provide both ___________ and ___________.
Newtons/magnitude and direction
A 10 kg bowling ball and a feather are dropped from the ceiling at the same time. Which one hits the ground first?
The bowling ball.
What are two ways you can DECREASE an object's GPE?
Lower it
Decrease its mass
When labelling a graph, the ________ variable always goes on the Y-axis, and the ________ variable always goes on the X-axis.
Dependent on Y-axis
Independent on X-axis
Refer to Image 2. Point to ALL of the segments where the object is MOVING at a constant speed.
Segment B and segment C
Refer to the Image 1. The box is already moving to the right and then the two extra forces act on it. What will happen to the box's motion? BE SPECIFIC
It will stay in motion with a constant speed to the right.
A watermelon and a watermelon with a parachute are dropped in a vacuum with no air at the same time. Which one hits the ground first?
They hit at the same time.
Give THREE examples of objects that have increased their elastic potential energy
Objects need to be compressed or stretched
What is a controlled variable?
Something that the experiment purposely tries to stay the same when running an experiment.
Refer to Image 3. Point to any segment in which the object is moving with ZERO acceleration
Segments A, C, E
What is the net force acting on the box in Image 4?
8 Newtons down
Refer to image 5. Which car design would accelerate faster AND why?
Car B, because there is less drag/air resistance.
Refer to Image 6. What is the charge of the box? What is the charge of the circle? Will they attract, repel, or neither?
Box is positive
Circle is no charge
They will neither attract or repel
List the six steps of the scientific method
Ask a question
Form a hypothesis
Test the hypothesis/Experiment
Analyze the results
Draw a conclusion
Share/Communicate the results
What are the THREE ways an object can accelerate? (Don't say positive, negative, and zero).
Speed up
Slow down
Change direction
Name TWO unbalanced forces we have studied this year
Friction
Gravity
An object has reached terminal velocity. The net force is ________ Newtons. The forces are ___________ (balanced, unbalanced). What will the object's acceleration be?
net force = 0 Newtons
Balanced
Zero acceleration
Refer to the bin in the front room. Use the magnetic field line to (1) tell how many magnets are in there, (2) Point to the poles, (3) tell whether they are attracting or repelling
There are no magnets in there.