Chapter 6: Force and Motion II

1
Chapter 6 Force and Motion II
2
Newtons Laws

1. If no net force acts on a body, then the bodys
   velocity cannot change.
2. The net force on a body is equal to the product
   of the bodys mass and acceleration.
3. When two bodies interact, the forces on the
   bodies from each other are always equal in
   magnitude and opposite in direction.

3
Static and Kinetic Friction
Static frictional force
Kinetic frictional force
Skid marks are 290 m long! ?k 0.6 and a
const. How fast was the car going when the wheels
became locked?
4
Drag Force and Terminal Speed
5
Uniform Circular Motion
Centripetal acceleration
Period
Centripetal force
6
Sample Problems 6.8, 6.9, 6.10