Physics 1, East Los Angeles College
Review Sheet,
TEST #2
Mr. V. Kiledjian
1) An object’s original position is 30 meters at an angle of 150 degrees and final position is 30 meters at 70
degrees.
The object is traveling at constant speed in a circular arc clockwise and makes the journey in
12 seconds.
a)
Find the Displacement vector.
b)
Find the total Distance traveled.
c)
Find the avg Velocity vector, avg Speed, and instantaneous Speed.
d)
Find the avg Acceleration vector and instantaneous Acceleration vector.
Show that the avg
Acceleration vector points towards the center when placed at the midpoint of the arc!!!
2) A particle is traveling along the graph of the equation y = x
3
from (0,0) to (2,8) at a rate of
dx/dt = 1 m/s.
It makes this path in 2 seconds.
Assume x and y are in meters.
a) Find the total distance it travels and the magnitude and direction of its displacement.
b) Find the instantaneous velocity vector and acceleration vector at t = 0 & 2 seconds and the instantaneous
speed at t = 0 & 2 seconds.
c) Find its average speed and the magnitude and direction of its average velocity and average acceleration.
(Show that the average speed and the magnitude and direction of the average velocity and acceleration vectors
are between the initial and final instantaneous values!)
3) If a projectile is shot from the top of a building which is 156 meters high at a speed of 34 m/s and an angle
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview.
Sign up
to
access the rest of the document.
 Summer '08
 Kiledjian
 Physics, Acceleration, Velocity, East Los Angeles College, avg Acceleration vector, Mr. V. Kiledjian

Click to edit the document details