Section 1: Work & Energy.

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Presentation transcript:

Section 1: Work & Energy

Q: What is energy? Q: Where does energy come from?

Section 1: Energy and the work equation Energy: the ability to do _______

Types of energy: Potential: Kinetic:

Real Life Applications

NASCAR: Why are cars designed to crush

Spring vs. Shock: How could running shoes effect your stamina?

What makes space travel so difficult?

Work Energy Equation: Work = Net Force x Distance x cos(θ) Demo 1: Lifting weights and cheating Demo 2: Shooting projectiles

Work Sample Calculations: Sample Calc 1: A force of 50 N acts on the block at the angle shown in the diagram. The block moves a horizontal distance of 3.0 m. How much work is done by the applied force?

Sample Calc 2: Find the work done on the following guy if he is pulled 10 meters.

Practice Problems: Pg 162 (1-4) Pg 163 (1-4)