Vocabulary
Laws
Energy
Misc.
Ms. Egan Facts
100
energy that is stored in an object or system due to its position
Potential Energy
100
Forces come in pairs.
“For every action, there is an equal and opposite reaction”
Newton's 3rd Law
100
Where is the lowest DE on this coaster?
1 - no energy was wasted yet
100
This force acts in the opposite direction of an object's movement
Friction Force
100
What sport does Ms. Egan coach?
Basketball
200
the ability to cause change or to do work.
Energy
200
This is an example of what law?
The skateboard won’t move unless you push off from the pavement with one foot.
Newton's 1st Law
200
The reason roller coasters can come to complete stops is because they
A. Destroy their energy
B. Loose energy to heat, sound, light
C. Loose energy to gravity
B - dissipated energy!
200
What are the units for F m and a in Newton's 2nd law F=ma?
F=
m=
a=
F= N
m= kg
a= m/s2
200
What did Ms. Egan loose right before break?
Her voice
300
the ability of an object to resist (fight) change in motion
Inertia
300
If one person hits a board very slowly and another hit it very fast, who will break the board and what law does this show?
F=ma
Since the fast hit has a high acceleration it will hit with a large force.
The slow hit it would not have a high 'a' so would have a smaller 'F'
300
The two factors that affect kinetic energy are?
Bonus! Which one affects KE most?
Mass and Speed *mostly Speed*
300
This graph of KE showed us that....?
Speed affects KE more than mass does
300
What is Ms. Egan's favorite book series?
Harry Potter
400
speed in a given direction
Velocity
400
When a gun is fired, what law explains why it recoils?
Newton's 3rd Law
For every action (the gun pushing on the bullet). There is an equal and opposite reaction (the bullet pushing on the gun)
400
The two factors that affect potential energy are...
Mass & Height
400
According to this chart, why did the car crash?
It did not dissipate all of it's energy/ it did not convert all of it's KE to DE/PE
400
What new shoes did Ms. Egan get for Christmas?
Navy and white 550's new balance
500
change in motion: either a change in speed or direction (or both)
Acceleration
500
A roller coaster's first peak has 100J of potential energy. When it reaches the end, it comes to a complete/safe stop.
How much energy should the roller coaster end with according to the law of conservation?
The same amount it started with :) 100J
It changes to PE,KE, DE throughout but is not destroyed or created.
500
If two rocks are dropped from the same height, what would give one MORE PE over the other?
If it had a higher mass
500
What is the formula for KE?
a. 2ma2
b. 1/2ma2
c. 1/2mv2
c. 1/2mv2
500
What month is Ms. Egan getting married?
September!