Do Now
Together with a partner, fill in the whiplash sequence
chart with descriptions of what is happening according
to Newton’s first and second laws.
An automobile is stopped at a red light. This is the
automobile in which the driver is going to receive a
whiplash injury. The driver is at rest within the automobile.
Newton’s first law:
The stopped automobile gets hit from the rear. The
automobile beings to move.
Newton’s second law:
The back of the seat pushes the driver forward and the
driver’s torso moves with the automobile.
Newton’s second law:
The driver’s head is not supported and stays back where it
is.
The neck muscles hold the head to the body as the body
moves forward. The muscles then “whip” the head forward.
The head keeps moving until it gets ahead of the torso.
Newton’s first law:
Newton’s second law:
Newton’s first law:
The head is stopped by the neck muscles. The muscles pull Newton’s second law:
the head back to its usual position.
Team Challenge
Homework :D
WDYTN 3-2 Rewrites
Thursday
2.
Physics to Go 3-5
Monday
Due
TODAY!
1.
 Physics to Go 3-4
February 18th
February 22nd
Checking Up 3-4
1
2
Checking Up 3-4
1
Checking Up 3-4
2
Checking Up 3-4
4
Checking Up 3-4
6
Objectives 3-4
We are learning…
BIG Questions
 A driver hit from behind will experience
whiplash. This is where the head moves back and
then snaps forward.
 Whiplash can be explained using Newton’s first
law and Newton’s second law (F = m∙a)
1.What is whiplash?
We will be successful when we can…
 Evaluate, from simulated collisions, the effect of
2.Howcollisions
can the
events
during
rear-end
on the
neck muscles
 Describe the causes of whiplash injuries
 Provide examples of Newton’s first and second
using
Newton’s
and
laws
of motion
in automobilefirst
crashes
 Analyze
the role laws?
of safety devices in preventing
second
whiplash injury
whiplash be explained
Agenda
• Do Now 10
• Checking Up 5
• Quiz 10
• WDYTN? 20
Quiz 3-4
WDYTN 3-4
What is whiplash? Why is it more
prominent in rear-end collisions?
•
Explain cause of whiplash
injury
•
Provide examples of
Newton’s first and second
laws of motion in rear-end
collisions
•
Describe role of safety
features in preventing
whiplash injury