Unit 4: 2D Forces and Motion Flashcards
1
Q
Speed
A
How fast
2
Q
Velocity
A
How fast and in what direction
3
Q
Acceleration
A
How fast velocity changes
4
Q
Concurrent Vectors
A
Two or more vectors acting on the same object
5
Q
Resultant Vector
A
The sum of 2 or more vectors
6
Q
Magnitude
A
The length of the vector
7
Q
Normal Force
A
A reactionary force that keeps one object penetrating into another object (perpendicular to the surface)
8
Q
Trajectory
A
Path of the projectile
9
Q
Horizontal motion doesn’t affect the vertical motion of a projectile
A
10
Q
Gravity controls the time of free fall (y- dimension)
A
11
Q
(a=0), Vix controls the distance (x- dimension)
A
12
Q
N=W=mg
A
13
Q
Pythagorean theorem
A
a^2+ b^2= c^2
14
Q
Components
A
A vector parallel to the x-axis and another parallel to the y- axis
15
Q
Frictional Force
A
Acts parallel to the slide
