Kinematics Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What are the 3 kinematics equations

A

V= Vx0 + AxT
X= X0 + Vx0T + 0.5Ax²
Vx²= Vx0² + 2Ax( X - X0)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are ways to describe average Velocity

A

Displacement/ time
(Vx + Vx0)/2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the difference between distance and displacement

A

Displacement is the difference between the start and the end points. Distance is the amount the particle has traveled

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is velocity and acceleration

A

Velocity- Displacement/time
Acceleration- Velocity/time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the equations in the y direction for projectile motion and the x direction for projectile motion

A

All 3 kinematics equation apply for the y direction
X= Vx0T for the x direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

If a ball is thrown up or as a projectile, at max height what is the Velocity in the y direction

A

Vy= 0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How would you find the initial velocity of a projectile in the x and y that is launched at an angle, given the initial velocity

A

Use trigonometry to find the components.
Vx0= V0costheta
Vy0= V0sintheta

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How does the velocity in the y change overtime in a projectile problem vs the change in velocity in the x

A

The velocity in the y is the same magnitude but going up Vy0 is positive and going down Vy is negative
The velocity in the x is constant, Vx0=Vx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

If a projectile is horizontally launched, what is Vy0

A

Vy0 = 0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the acceleration of projectiles and objects in free fall vertically and horizontally, why?

A

Acceleration is always -9.8 m/s² in the y because the earth is in our system
Acceleration is always 0 in the x because in free fall the motion is in the y and in projectile motion the velocity is constant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

If velocity is constant, acceleration is

A

0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are vectors in kinematics

A

Displacement, acceleration, velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are scalars in kinematics

A

Distance, Speed, time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is speed

A

distance/time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

name all the variables in the y direction for horizontal range projectile problems

A

Y=0 Yo=0
Vyo= Vosintheta Vy= -Vyo
Ay= -9.8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

name all the variables in the x direction for horizontal range projectile problems

A

X= X Xo= 0
Vxo= Vocostheta Vx=Vxo
Ax=0

17
Q

name all the variables for a horizontally launched object in the y direction

A

Vyo= 0 Vy= Find with equation
Y=0 Yo=Yo
Ay= -9.8

18
Q

name all the variables for a horizontally launched object in the x direction

A

Vxo= Vo Vx= Vxo
Xo= 0 X=X
Ax= 0