Kinematic Equations
Motion Graphs
Projectile Motion
Vectors and Scalars
Component Vectors
300
Identify given info in the following statement:
A man jogs at an initial velocity of 8m/s but accelerates at a rate of -0.05m/s^2. How long will it take him to stop?
v_i = +8m/s
a=-0.05 m/s^2
300
What is happening in the graph below?
Slowing down then speeding up / constant negative acceleration
300
What do you know about the acceleration of an object undergoing projectile motion?
ay = -10m/s/s
ax =0m/s/s
300
Which is a scalar: speed, distance, velocity
velocity
300
A toy rocket ship has a vertical velocity of 12 m/s up and a horizontal velocity of 5 m/s south. What is the magnitude of the rocket ship's total velocity?
13m/s
400
What kinematic equation do you need to solve this problem?
A car skids to a stop from an initial velocity of 22.3m/s. If the car had an acceleration of -3.7m/s/s, then how far will it skid?
vf2=vi2+2ad
400
What is the displacement of the object represented by the motion graph shown below from t=0 to t=2.25
d= 1/2 * 2.25*2.25 = 2.53 m
400
Horizontal or vertical question?
How long does it take a projectile to fall
vertical
400
What is the different between a vector and a scalar?
scalars have no direction, vectors do
400
If you apply a force of 243 N at an angle 70 degrees above horizontal. What would the expression for the vertical component of the force be?
243sin(70)
500
An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff.
d = 1720 m
500
What is the velocity of the graph shown below?
2m/s
500
What are component vectors
The portions of a vector that point in each dimensions, such as up/down and left/right
500
A rocket is launched with a initial total velocity of 2,360 m/s at an angle 80 degrees above horizontal. What are the horizontal and vertical components of velocity?
vix=410 m/s
viy=2324 m/s