HP Cycle 27

2/21 - 2/24

T 2/21

W 2/22

Th 2/23

F 2/24

🟢 5: T 2/21, 🔵 7: W 2/22 - work, energy, and power problems (2)

Today, continue working on page 1 only of Work, Energy, and Power Review Problems.  Page 1 SOLUTIONS.  These problems are due to ✏️ Google Classroom by Wednesday, February 22nd at 10pm.  With any time remaining, you can work on Page 2.  

Homework:  Complete your written solutions of page 1 only of Work, Energy, and Power Review Problems (Page 1 SOLUTIONS) for upload to ✏️ Google Classroom by Wednesday, February 22nd at 10pm.  Assessment on all of Work and Energy on Friday, February 24th.  

Optional Extra Practice: 

🟩 5: W 2/22, 🟦 7: Th 2/23 - momentum intro 

Today we will introduce momentum and impulse. We will learn that momentum p = mv and that the change in momentum Δp = impulse FΔt. We will look at examples of how impulse is altered. We will also start to discuss conservation of momentum in a collision.   

Presentation: Momentum Presentation

Homework:  Study for assessment on all of work and energy next class - Friday, February 24th.   Complete 📖 Mastering Physics "Ch 9 - Impulse" problems: #3, 12, 15, 17, 46, 47, 48.  We won't have much time in class to do these problems if any.  Problems are due Wednesday, March 1st at 10pm.

Optional Extra Practice: Page 1 in Momentum Packet (SOLUTIONS)

Here's a solution for one of the most complex examples 6.5 from this presentation.  Note that the video ultimately finds the "force of impact," or the net force here which is the answer to part (b).  However in part (c) of our problem, we're asking for the force that the ground exerts on the worker, so for that part, draw a free body diagram and rearrange ΣF = FN - Fg  for FN .   

💚❗ 5: F 2/24, 💙❗ 7: F 2/24 - energy assessment

Assessment on all of Work and Energy Today!

Homework:  Complete 📖 Mastering Physics "Ch 9 - Impulse" problems: #3, 12, 15, 17, 46, 47, 48.  We won't have much time in class to do these problems if any.  Problems are due Wednesday, March 1st at 10pm.