Studied by 1 person
What is position? What is its symbol?
location with respect to an origin; x
What is displacement?What is its symbol?What is its standard unit?
shortest distance between 2 points with direction; delta x; m
What is the difference between distance and displacement?
distance- total distance depends on path taken; displacement- only depends on intial and final endpoints, has direction
What is the difference between point quantities and interval quantities of space/time?
Point quantities are coordinates that locate the object, interval quantites are lengths
What are the point quantities in space?In time?
space- position; time- clock reading
What are the interval quantities in space?In time?
space- displacement, distance; time- time interval
What is the difference between clock reading and time interval? What is their standard unit?
clock readings is a point in time, time interval is a length of time, s
In a track diagram, what indicates the speed of an object?
distance between two successive tracks
What is magnitude?
size of a quantity
What is the difference between a vector and a scalar?
scalars only have magnitude, vectors have magnitude and direction
What is the difference between instantaneous and average quantities?
instantaneous- calculated at a point; average- calculated over an interval
What is the difference between speed and velocity?
velocity has direction
What does the magnitude of acceleration indicate?
how quickly velocity is changing
What is the rule to determine the direction of acceleration given velocity vectors?
It is in the same direction as the net pull
What does the sign of acceleration indicate?
direction of a-arrow (left or right, up or down)
When is a new stage created in a multi-stage problem?
when the acceleration changes
What is free fall?
falling where gravity is the only force
What is the velocity at the peak for an object thrown straight up?
0 m/s
How does the speed on the way up compare to the speed on the way down when an object in free fall reaches the same elevation?
same
How does the time to the peak compare to the total time in the air for an object that is thrown up and caught at the same point (in free fall)?
half
What’s the difference between an object that is dropped and one that is thrown?
dropped: v0 = 0; thrown v0 != 0
List the kinematic functions from low to high order.
x(t), v(t), a(t)
What type of functions do integrals always produce?
delta functions
What must be true about the motion of an object at a turning point or U-turn?
v = 0
Note 
Flashcard (32)