1 - translational motion Flashcards
Scalar=
vector=
component vector=
a physical quantity that has magnitude but no direction.
a physical quantity with both magnitude and direction. Changing the magnitude or direction of the vector creates a new vector.
the sum of two vectors which add up to an original vector. Infinite component vectors are possible for a single vector.
-a vector times a scalar=
vector (product)=
scalar (product)=
vector.
V1V2sin(theta)
V1V2cos(theta)
pythagorean theorem=
SOH CAH TOA
A^2 + B^2 = C^2
–> sin(theta) = O/H
–> cos(theta) = A/H
–> tan(theta) = O/A
common triangles on the MCAT:
1) 3-4-5
2) 5-12-13
speed=
velocity=
acceleration=
distance/time
displacement/time
(change in velocity)/time
uniformly accelerated motion=
motion with constant acceleration. Both direction and magnitude remain constant.
3 Linear motion equations:
and what has to be constant?
1) X = Xo + Vot + 1/2at^2
2) V = Vo + at
3) V^2 = Vo^2 + 2ax
Constant acceleration is a MUST
What equation is used to find the average velocity in a uniformly accelerated motion problem.
Vavg = 1/2(V+Vo)
d/t graph=
v/t graph=
the slope is the velocity, and area is meaningless.
the slope is the acceleration, and area is the displacement.
what equation is used to find peak height of a projectile:
Vo sin(theta) = square root(2gh)
Vertical velocity dictates?
horizontal velocity dictates?
the time of the flight
and the distance traveled
- Air resistance created when?
- Larger surface area will create?
- Shape?
- Higher velocity?
- Mass?
- Air resistance created when a projectile collides with air molecules
- larger surface area will create more air resistance because of more collisions
- shape also affects air resistance
- higher the velocity the higher the air resistance
- mass changes the effect of air resistance, but doesnt change air resistance
