Contents of this post
Warm up
In your own words, define the word momentum. Next, give an example of two objects where one has more momentum than the other.
Today you will be learning about momentum. Most people have a natural grasp of what momentum means…so remember that as we begin our study. You may have some mistakes in your knowledge, and you may not know the math formula, but I bet you could describe two things that have different momenta (the plural of momentum is momenta).
Class work
- Complete the warm up.
- While watching the videos, take notes on the handout. The teacher can pause it if you need it (handout is at the bottom for students who are not in class today).
- Read pages 374-377 in the textbook. Answer the questions on the handout as you read.
- Complete the practice problems.
Video 1
Watch the first 3:41 minutes of this video.
Video 2
Play this video all the way through.
Book reading
Read pages 374-377 in the textbook, then answer the rest of the questions and problems on the worksheet.
Video 3
If there is extra time in class, this video introduces momentum in collisions.
Hint: A “vector quantity” just means you have to pay attention to the direction. You’ll spend more time on vectors later in math, but all you need to remember is that you can have positive or negative momentum if they are going in opposite directions.
Elastic collisions are ones where the two objects bounce off each other and don’t stick. Inelastic collisions are where they stick together and move as one object after the collision.