Remote Learning Packet NB: Please keep all work produced this week. Details regarding how to turn in this work will be forthcoming.

April 6 - 9, 2020 Course: 11 Physics Teacher: Miss Weisse natalie.weisse@greatheartsirving.org Resource: Miss Weisse’s Own Physics Textbook — pertinent pages found at the end of this packet Weekly Plan Checklist: Monday, April 6 ⬜ Read & Understand Notes on the Conservation of Momentum (pages 20-26) ⬜ Perform the Conservation of Mass Experiment if Your Parents Give You a Thumbs Up ⬜ Email Miss Weisse with Questions & to Get Solutions! Tuesday, April 7 ⬜ Read & Understand Notes on the Conservation of Momentum (pages 27-30) ⬜ Complete Unit 8 Worksheet 3 Problems #1-3 ⬜ Email Miss Weisse with Questions & to Get Solutions! Wednesday, April 8 ⬜ Review Notes From Tuesday ⬜ Complete Unit 8 Worksheet 3 Problem #4-6 (same sheet of paper as yesterday, please!) ⬜ Email Miss Weisse with Questions & to Get Solutions! Thursday, April 9 ⬜ Review Notes on Conservation of Momentum — page 27 will be especially helpful ⬜ Complete Unit 8 Worksheet 4 ⬜ Email Miss Weisse with Questions & to Get Solutions! Friday, April 10 — No School Statement of Academic Honesty I affirm that the work completed from the packet is mine and that I completed it independently. _______________________________________Student Signature

I affirm that, to the best of my knowledge, my child completed this work independently _______________________________________ Parent Signature

DAILY PLANS Monday, April 6 ➔ Read Pages 20-26 of Miss Weisse’s Own Physics Textbook

➔ Perform the Conservation of Mass Experiment if Your Parents Give You a Thumbs Up. Email me if you’d like instructions.

➔ Email Miss Weisse with Questions About the Notes! Tuesday, April 7 ➔ Read Pages 27-30 of Miss Weisse’s Own Physics Textbook

➔ Complete the following problems on a sheet of paper with a full heading — Unit 8 Worksheet 3 1. Jude (m = 50.0 kg) and Alex (m = 65.0 kg) are at rest on frictionless in-line skates. The Jude

pushes the Alex so that Alex rolls away at a speed of 10.0 m/s. What is Jude’s final velocity?

2. In a railroad yard, an empty boxcar, coasting at 3.0 m/s, collides with a loaded car that is stationary. The two cars then move down the track together. Each of the boxcars has a mass of 9000 kg when empty, and the loaded car contains 55,000 kg of lumber. At what speed do the car move after the collision?

3. An astronaut of mass 80.0 kg is holding an empty oxygen tank of mass 10.0 kg. By pushing the tank away with a speed of 2.0 m/s, the astronaut recoils in the opposite direction. What is the velocity (including direction) of the astronaut?

➔ Email Miss Weisse with Questions & to Get Solutions!

Wednesday, April 8 ➔ Review Pages 27-30 of Miss Weisse’s Own Physics Textbook

➔ Complete the following problems on a sheet of paper with a full heading — Unit 8 Worksheet 3 (continued)

1. A 50.0 kg cart is moving across a frictionless floor at 2.0 m/s. A 70.0 kg boy, riding in the cart,

jumps off so that he hits the floor with zero velocity. What is the velocity (including direction) of the cart after the boy jumps off?

2. A 2.0 kg melon is balanced on a circus performer's head. An archer shoots a 50.0 g arrow at the melon with a speed of 30 m/s. The arrow passes through the melon and emerges with a speed of 18 m/s. What is the velocity (including direction) of the melon after the arrow passes through?

3. Old cannons were built on wheeled carts, both to facilitate moving the cannon and to allow the cannon to recoil when fired. When a 150 kg cannon and cart recoils at 1.5 m/s, at what velocity would a 10.0 kg cannonball leave the cannon?

➔ Email Miss Weisse with Questions & to Get Solutions!

Thursday, April 9

➔ Review Pages 20-30 of Miss Weisse’s Own Physics Textbook

➔ Complete the following problems on a sheet of paper with a full heading — Unit 8 Worksheet 4

1. Airplanes maneuver on the ground by using thrust from their jets or propellers. A fully loaded, 396,900 kg Boeing 747-400 gets a total of 1100 kiloNewtons of thrust from its jet engines. Takeoff speed depends on a number of factors like air temperature, airplane weight, and airport elevation, but let us say that liftoff will occur at 170 mph.

a. Determine the time the plane takes to go from 0 to 170 mph. (1 mile = 1600 meters)

b. What is the momentum of the airplane at take-off?

c. Calculate the impulse the plane receives from the engines during takeoff.

d. What additional information would be needed to calculate the velocity of the exhaust gasses from the engines?

2. An apple (m = 100 g) falls from a tree. What is the recoil momentum of the branch it was hanging on?

3. a. Why is it difficult for a fire-fighter to hold a hose that ejects large amounts of high-speed water?

b. Calculate the force needed to hold a 6.0 cm diameter fire hose in place when the water flow rate is 110 m3/hour. (density of water: 1000 kg/m3)

➔ Email Miss Weisse with Questions & to Get Solutions!

Friday, April 10 — No School

Well done! You’ve made it to the end of week 2 of distance learning, and, what would have been the end of the 3rd Quarter!

I appreciate the work you are doing and the effort you are putting into these assignments.

Have a wonderful, long weekend!

Warmly, Miss Weisse

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