Unit 2 Class Notes

1
Unit 2 Class Notes
The Kinematics Equations (1D Equations of Motion)

• Honors Physics

2
Day 4
Chase Problems
3
(No Transcript)
4
(No Transcript)
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
both start at the same place at the same time.
start at different places but at the same time.
both start at the same place but at different
times.
start at different places and at different times.
B or D but be moving in different directions
YIKES!
12
New Look Leo
Great for Chase Problems
13
Notice that both equations above are really THE
SAME EQUATION. That being said, the 2nd equation
is SOOOOOOOOOO much easier to use in Chase
Problems.
14
Notice that while Timmy and Susie have different
starting positions (x1T 0m while x1S 50 m),
they have the same final position (x2) after
Timmy catches Susie.
x2T x2S
Use the chase equation
15
As a continuation of the last problem,
Notice that while Timmy and Susie have the same
starting position (x1T x1S 0), they ALSO have
the same final position (x2) after Susie catches
Timmy.
x2T x2S
Use the chase equation
16
Start with the dropped penny
17
Notice that the dummies have different starting
positions (x1A 0, x1B 10000), BUT they have
the same final position (x2) when they crash.
x2A x2A
How fast is the 2nd dummy travelling at the 5
second mark (when he reaches top speed?)
18
TONIGHTS HW
Complete pp. 62-64, 68, 104 Complete Chase
Problems Worksheet.