UNIT TWO: Motion, Force, and Energy. Chapter 4Motion Chapter 5Force Chapter 6Newton’s Laws of Motion Chapter 7 Work and Energy. Chapter Seven: Work and Energy. 7.1 Force, Work, and Machines 7.2 Energy and the Conservation of Energy 7.3 Efficiency and Power.
How is energy related to motion?
Energy in a System
Can you spot the simple machines?
Can you names some complex machines?
Output force (N)
MA = Fo
Input force (N)
W = F x d
How much work is done by a person who pulls a cart with a force of 50 newtons if the cart moves 20 meters in the direction of the force?