Tuesday, November 1, 2022. Day 1

Do Now:

Please copy the homework into your agenda.

Complete this Key COncept Builder while we get class started.

Homework to be completed:

Please complete any unfinished classwork for tomorrow.

Complete the Lesson 2 Review on page 508

  • Due Friday in class.

Today’s Lesson:

Combining Forces

  1. Net Force is the combination of all forces acting upon a body.

    • When forces act together in the same direction, they are added.

    • When forces act in opposite direction, the are subtracted.

  2. Vectors are used as a way to identify the direction and magnitude (strength) of the net force.

    • example

      • use vectors to determine the net force on a car with an applied force of 1500 N acting to the right moving it forward and a friction force of 2000 N acting to the left.

  3. Also, assign forces a sign (+/-) based on their direction (just like a coordinate system)

    • +for right and up

    • - for left and down

    • Example

      • use vectors to determine the net force on a model rocket with an applied force of 1000 N acting upward and a friction force of 250 N acting downward.

Practice Worksheet - Key Concept Builder handout

  • due tomorrow.

If time permits:

Complete the Lesson 2 Review on page 508

  • Do questions 1-8

  • Due Friday at the beginning of class.