Newton's Laws
An elephant jumping on a trampoline
Newton's Third Law
What is the definition of Force?
A push or a pull that causes an object to move
Resting on your bike at the top of the hill is an example of...
Potential Energy
If you have 7 Newtons of force acting on an object from the left and 15 Newton's of force from the right, how much is the net force and which direction will your object move?
Net Force = 8 Newtons
Object will move to the right
Do Now
F = m * a
Newton's Second Law
Explain how to determine independent vs dependent variables. ***100 bonus points if you can name the acronym that can help you figure this out
Independent variable is what you change in your experiment, while dependent responds to how you've changed your independent variable. DRY MIX helps us figure it out
An asteroid falling to Earth has...
Kinetic Energy
Considering the equation for force is F = m * a, an object has a mass of 500 kg and your a is regular gravity, how do you think these measurements will affect the value of F? Explain in terms of the equation
F will be larger because m is a large number and even though a is = to gravity, gravity times a huge number will give a huge number as = to F. This makes sense because it requires more force to move larger objects
What is a Glow/Grow chart? Explain what a glow and grow is
A glow is something you are good at, a grow is something that you can improve upon
A game of tug of war is an example of...
Newton's Third Law
What are force pairs?
Force pairs are when there is an action and reaction force acting on an object
A snail creeping along the sidewalk has...
Kinetic Energy
Using the equation Distance/Time = Speed, figure out the speed of a bowling ball that rolled 8 feet in 4 seconds. Include units.
2 ft/s
The tables help simplify what is going on in the textbooks. They let you know what you should be doing, how you should be doing it, and when you should be doing it.
You need to apply _________ force to roll a bowling ball down a hallway and ________ force to roll a golf ball the same distance. Which of Newton's Laws makes this the case?
more; less
Newton's Second Law
Explain a balanced vs an unbalanced force. Provide an example of each
Balanced force means that the forces acting on an object are all equal and result in no change in an objects movement. An unbalanced force means that the force acting on an object are unequal and result in some sort of change in an object's movement, namely acceleration
Squeezing a spring between your palms is an example of...
Potential energy
Name the variables in this equation:
PE = h * w
Potential energy = height x weight
What are the classroom norms?
Ms. Taylor will read them from chart paper
Name all three of Newton's Laws of Motion from memory
First: an object at rest will stay at rest/ an object going at a constant speed will remain at that speed unless acted upon by an external force
Second: The amount of force applied to an object is directly dependent on an object's mass and acceleration, F = m * a
Third: every action has an equal and opposite reaction
Define Inertia (and pronounce it!)
Inertia = the concept that a body at rest will stay at rest/a body in perpetual motion will stay in that motion unless acted upon by an external force
A rock falling from a cliff in midair is an example of...
potential energy converting into kinetic energy
Name equation for Kinetic Energy
KE = 0.5m * v2
What are the class goals we came up with at the beginning of the summer?
Ms. Taylor will read them from the chart paper.