Lecture 6 Flashcards
What are the 4 equations of motion
Vf = vi + at
d = (vi)(t) + 1/2at^2
d = 1/2(vi + vf)t
(vf)^2 = (vi)^2 + 2ad
What is a plane
A smooth flat space defined by two axes
What is planar motion
Any motion in this space
What is projectile motion
Any airborne body that is only subjected to gravity and wind resistance after it has left the ground
What is trajectory
The path of a projectile
What are the two separate motions of a projectile
Vertical
Horizontal
Which motion does gravity only affect
Vertical
Acceleration due to gravity is…
What is its magnitude
What is its direction
CONSTANT
-9.81 m/s^2
Towards the earth (downwards)
What is the equation for Final Vertical displacement Yf
Viy * Change in time + 1/2 * gravity * (change in time)^2
Viy = initial velocity in VERTICAL direction
What is the equation for Final Vertical Velocity Vf
Viy + g * Change in time
What is the Final Vertical Displacement and Final Verticle Velocity if the initial velocity is 0
Yf = 1/2 * g * (change in time)^2
Vf = g * Change in time
The horizontal velocity of a projectile is…
Its horizontal motion is in a….
CONSTANT
Straightline
What is the equation for Final Horizontal displacement Xf
Vix * change in time
Vix = initial velocity
What is the equation for Final Horizontal Velocity Vfx
Vfx = Vix
The vertical and horizontal motions of a projectile are
Together they create
Independant from one another
A parabola
