Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
cos 30
|
0.87
|
|
|
sin 30
|
0.5
|
|
|
sin 60
|
0.87
|
|
|
cos 60
|
0.5
|
|
|
Displacement
|
change in position
(Xf - Xi) |
|
|
Velocity
|
- How fast an object is changing its position
- Has speed and direction v = ∆x/∆t |
|
|
Speed
|
- Magnitude of velocity
- A scalar (no direction) - Can never be negative |
|
|
Average Speed
|
total distance/time
|
|
|
Acceleration
|
- How fast velocity is changing in speed or direction
- Vector, has direction a = ∆v/∆t |
|
|
Big Five #1
(missing a) |
d = (vₒ + v)t/2
|
|
|
Big Five #2
(missing d) |
v = vₒ + at
|
|
|
Big Five #3
(missing v) |
d = vₒt + ½at²
|
|
|
Big Five #4
(missing vₒ) |
d = vt - ½at²
|
|
|
Big Five #5
(missing t) |
v² = vₒ² + 2ad
|
|
|
Free Fall
|
- Objects moving only under the influence of gravity
- Where g = 10 m/s |
|
|
Projectile Motion
(Horizontal Velocity) |
vₓ = vₒₓ
Note that vₒₓ = vₒcosϴ In other words, velocity is constant |
|
|
Projectile Motion
(Horizontal Acceleration) |
aₓ = 0
V is constant, so by definition of A there is no acceleration horizontally. |
|
|
Projectile Motion
(Horizontal Distance) |
x = vₒₓt
|
|
|
Projectile Motion
(Vertical Distance) |
y = vₒᵧt + ½(-g)t²
Note that vₒᵧ = vₒsinϴ |
|
|
Projectile Motion
(Vertical Acceleration) |
aᵧ = -g
|
|
|
Projectile Motion
(Vertical Velocity) |
vᵧ = vₒᵧ + ½(-g)t²
|
