Lect. 1: Translational Motion, Lect 2. Force, Lect. 3-Torque, Equilibrium, & Lect. 4-Momentum, Machines, Radioactive Decay Flashcards
Equation: Speed
speed = distance / time
Eequation: Velocity
velocity = displacement / time
Equation: Acceleration
acceleration = change in v / time
Equation: Side opposite angle in triangle
O = H * sin(ø)
Equation: Side adjacent to angle in triangle
A = H * sin(ø)
Equation: Displacement in linear motion
x = x(initial) + v(initial) * t + (1/2) * a * t^2
Equation: Linear motion, Final Velocity w/ a & t
V(final) = V(initial) + a * t
Equation: Linear motion, final V w/ a & x
V(final)^2 = V(initial)^2 + 2 * a * x
Equation: Average V w/ uniform Accel
V(avg) = 1/2 (V final + V initial)
Slope on Displacement vs Time Graph
instantaneous velocity, + or – indicated direction from starting point
Area under curve in Displacement vs Time graph
N/A
Slope in Velocity vs. Time graph
Instantaneous Acceleration; + or – indicates direction from starting point
Area under curve in Velocity vs Time graph
Distance or Displacement
Equation: Displacement w/ constant acceleration
X = V(avg) * time
Equation: Time in V vs. time graph
t = change in V / Acceleration (constant)
Equation: Peak height of a projectile
V(initial) * sin(ø) = √(2gh)
Equation: Initial vertical velocity (in projectile motion)
V(intial) * sin(ø)
Horizontal Acceleration during projectile motion?
Always = 0
Path of a projectile is INDEPENDENT of the object’s _______.
mass
What dictates the time in flight of an object in projectile motion?
Vertical velocity (Acceleration is constant at -10 m/s^2)
_________ is constant through the course of an object’s flight in projectile motion
Acceleration; = g = 10 m/s^2
In the absence of ________ , mass does not affect projectile motion.
Air Resistance
3 factors that change air resistance
speed
surface area
shape
Lg surface area __________ air resistance
increases; allows more collisions w/ air molecules