Units/Vectors
What is the Acronym for trig functions?
SOHCAHTOA
What is the physics definition of velocity
Change in position over change in time
Recite one of Newton's Laws of Motion
Law of Inertia
F = ma
Action --> Equal/Opposite reaction
What is the most important concept in Energy? (Broadly speaking)
Energy is conserved.
Does circular motion require a complete circle?
No it does not, it only requires a curved path.
Name the difference between a scalar and a vector.
Scalar = Magnitude
Vector = Magnitude & Direction
What is the physics definition of acceleration?
Change in Speed over change in time.
Which type of force is mediated through strings, ropes, or chains?
Tension.
Recite an equation of one of the energies we went over in class.
K = 1/2 mv2
UG = mgh
Us = 1/2 k x2
Why do I hate Hobbit Doors so much?
Doorknob should be farther from the hinge, it gives more torque.
How many grams are in 1 kg?
1000
For projectile motion, what do we always ignore in the x - direction?
Acceleration
(Also accept air resistance)
What is the equation for friction?
F = (mu)N
Is momentum conserved in any kind of collision?
Yes
How can one find the direction of torque?
The Right-Hand Rule.
How many centimeters are in 1 meter?
100
What is the value of acceleration due to gravity on Earth? (with Units)
9.8 m/s2
Draw a free body diagram of a book sitting on a desk.
Professor Barros will judge
What has more momentum: A fast ball pitch or a semitruck at rest?
The fast ball.
Name ONE major consequence on the conservation of Angular Momentum in the Universe.
Planets rotating
Planets orbiting stars
Galaxy Formation
Translate 2hr into seconds
7200 seconds
Recite one of the three kinematics equations I so carefully derived in class.
Any of the three would do.
What does it mean when the Net Force on a given object is zero?
It has no acceleration. (i.e. it is at rest or moving at constant velocity)
What is the PHYSICS definition of Energy?
The ability to do work
Translate either linear position, velocity, or acceleration into its rotational form using the equations went over in class.
s = r (theta)
v = rw
a = r (alpha)