Momentum
Velocity and Displacement
Dimensional Analysis
Graph
lD equation of Motion & area calculations
100
What are the three different types of collisions?
Perfectly inelastic, elastic, inelastic
100
Is velocity a scalar or a vector?
Vector
100
How many seconds are in a day?
24hrsl60minl60secl
1 dayl1hr l1min
86,400 seconds per day
100
Name the graph
d Lt
Distance vs. Time
100
Solver for X
The average velocity is 5 m/s of a toy train and it went across the room in 30 seconds
Remember this equation: vav=1/2(v0+v)
150 m
200
Define perfectly inelastic
a type of collision where the two become one
200
Can displacement be only negative?
No, it can be both; negative and positive
200
Define Dimensional Analysis
comparing the dimensions of the physical quantities to find relationships between the quantities/Converting the physical quantities
Example: seconds to hours or milometers to inches
200
Name the graph...
Velocity vs. Time graph
200
What is the converted equation (with delta "Δ") for V2 ?
v2=v02+2aΔx
300
What is the equation for momentum?
P=mv
300
Which line is the Instantaneous?
the blue line because it is the outside or point moves along the line
300
Is this an example of dimensional analysis?
4 quarters = 10 dimes
4 quarters/10 dimes
or
10 dimes/4 quarters
yes
300
Which graph returns to the initial spot and that spot is the final spot too?
Distance vs. Time graph
300
Here are some equations to solve one problem:
A rectangle has t=5 and velocity= 3
What is the area?
15 is the displacement or change in position
400
Define Impulse
Change in Momentum
400
The lD equation of motion for Velocity is? Also the equation for average velocity is?
v = v0 + at
vav=1/2(v0+v)
400
Convert 3.5 hours to seconds
3.5hrl 60minl60secl
Cross out 1 hrlcross out 1 min
12600s
400
Which one is V constant?
The first one
400
You're dog is chasing you for attention and the dog is moving 5.5 m/s then when you got down stairs the dog slowed down to 4 m/s. Solve the average velocity.
Using the lD equation of Motion
First add 5.5 m/s and 4 m/s
then divide 2
Vav = 4.75 m/s
500
In which type of collision is momentum conserved?
elastic
500
Whats Velocity are the units?
m/s
500
convert 5 years to days
1 year l 1 day l 1 hr l 1 min
365.24 days l 24 hr l 60 min l 60 sec
1825 days
500
Calculate the total displacement
41 m in the positive direction
Area triangle t- 0s to 5s
bh/2
5s*4m/s
20m/2
10m
Area rectangle t- 5s to 12s
lw
7s*4m/s
28m
Area triangle t- 12s to 14s
bh/2
4m/s*2s
8m/2
4m
Area triangle t-14s to 15s
bh/2
1s*-2m/s
-2m/2
-1
Add them all
10m+28m+4m-1m=41m in a positive direction
500
Delta is meaning?
Change