Forces Day 3

Welcome to FPC: Draw a free body diagram of the moment Ms. Crock’s foot kicks a soccer ball to the right. Ignore air resistance. Remember: Identify forces Draw a box Draw arrows, showing direction and size of force Label arrows

Free Body Diagrams of Ms. Crock Kicking a Soccer Ball F Normal F applied F Friction F gravity

Agenda Turn in Homework to the box: Colorado Phet Activity Free Body Diagram Practice Colorado Phet Activity Cornell Notes on the relationship between force, mass and acceleration.

Writing and Reading Discussion Group Work Instruction Quiet Focused Active listening On Topic Ask Questions Group Work Focus on topic Fulfill Roles Lean in Instruction Listen Take notes Raise hands

Learning Targets I can use data from an experiment to support the claim that Newton’s Second Law correctly describes the relationship between force, mass and acceleration

Colorado Phet Get a Chromebook, a calculator and a timer Working with the person sitting next to you Follow the directions and complete as much as you can in the time remaining

Results What happens to acceleration as the mass of the object increases? Did you recognize the relationship? What happens to acceleration as the force applied to the object increases?

Cornell Notes: Next Right hand Side Topic: Newton’s Second law Essential Question: According to Newton’s Second Law, what is the relationship between force and acceleration AND mass and Acceleration LEFT HAND SIDE: glue in graphs

Force v. Acceleration Force and acceleration have a directly proportional relationship Directly proportional: As one value increases, the other increases at the same rate Special linear relationship

Mass v. Acceleration Mass and acceleration have an inversely proportional relationship Inversely Proportional: As one value increases, the other decreases. The decrease is not constant

Newton’s Second Law The Second Law says: The acceleration of an object is directly proportional to force, and inversely proportional mass

CHUNK HIGHLIGHT KEY TERMS ONE QUESTION PER CHUNK Repetitions! CHUNK HIGHLIGHT KEY TERMS ONE QUESTION PER CHUNK

Calculating Net Force Read the “Calculating Net Force” Handout Mark the text: Highlight information about what net force IS and how it is calculated Margin notes: clarify and summarize Answer questions on C-Note handout Work together! You can read to each other Read sections and then discuss questions Whatever works You have until the end of the period! At end, turn in: Computer Assignment, Questions if Done