3/13 Weight vs Mass Textbook p 392-393 Part A Momentum 3/13/17 3/13 Weight vs Mass Textbook p 392-393 Part A HW: Physics to go TB: p.402 #1 and #2 3/14 Momentum in a collision TB p 304 #1-7 WB p.127-128 3/15 Momentum TB p. 306 and take CN TB p. 308 Essential Questions HW: Text Book p. 307 # 1-3 3/16 Momentum video and Worksheet HW: TB: p. 315 #1-3 3/17 Conservation of Momentum TB p. 312-315 read and take CN WB p.136-137

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Date: 3/13 Goal: I can distinguish between mass and weight Read TB p. 392 What do you Think

Date: 3/13 Goal: I can distinguish between mass and weight Title : 3/13 TB p 392 Part A 1. With your shoulder partner complete TB p 392 Part A #1-5

Date: 3/13 Goal: I can distinguish between mass and weight Title : 3/13 TB p 392 Part A 1. With your shoulder partner complete TB p 392 Part A #1-5 2. With your shoulder partner complete TB p 402 #1-2

Date: 3/13 Goal: I can distinguish between mass and weight With your shoulder partner complete TB p 402 #1-2

Date: 3/13 Goal: I can distinguish between mass and weight Grab a textbook Independently read TB p. 166-167 and take cornell notes Title: 1/7 TB p 166

Today’s Activity 1/7 Free body diagram video

Today’s Activity 1/7 1 2 4 3 Draw and answer in your notebook

Date: 3/14 Goal: I can investigate the momentum of two objects in a collision Bell Ringer: If a 35kg monkey goes to planet Y that is 5 times the mass of Earth, what is the monkey’s weight on planet Y?

Date: 3/14 Goal: I investigate the momentum of two objects in a collision TB p 304

Date: 3/14 Goal: I investigate the momentum of two objects in a collision TB p 304 #1-7 You will use 10g mass as a small car You can use the 20g mass for the larger car 10 cm height = low velocity 20 cm height= high velocity Member #1 reads directions 1-3 Member #2 reads directions 4-6 Member #3 slides masses for 1-3 Member #4 slides masses for 4-7 All members write down observations on WB p 127

Date: 3/15 Goal: I can understand the momentum of two objects in a collision Bell Ringer: A group of students are dragging a block with a constant speed across the same surface used in Experiment 3. Its contact area is twice that of Side B and the load is 3.58 N. Use the results of Experiment 3 to predict the force that must be applied to the block. a. 2.03 N b. 2.62 N c. 5.26 N d. 9.16 N Experiment 3 Another student makes an effort to determine if the area of contact between the block and the table affects the amount of friction. The scientist finds a rectangular block with three unequal length sides. The three areas of the face of the block are: The student pulls the block (without the sandpaper) along each of the sides at a constant speed. The data are shown in Table 3.

Date: 3/15 Goal: I can understand the momentum of two objects in a collision Data table Describe observation from the activity What happen when a slow moving small mass collided with a stationary small mass? Before After

Date: 3/15 Goal: I can understand the momentum of two objects in a collision Data table Describe observation from the activity What happen when a fast moving small mass collided with a stationary small mass? Before After

Complete Data table Front and back Date: 3/15 Goal: I investigate the momentum of two objects in a collision Complete Data table Front and back You will use 10g mass as a small car You can use the 20g mass for the larger car 10 cm height = low velocity 20 cm height= high velocity Member #1 reads directions 1-3 Member #2 reads directions 4-6 Member #3 slides masses for 1-3 Member #4 slides masses for 4-7 All members write down observations on WB p 127

Date: 3/15 Goal: I can understand the momentum of two objects in a collision Grab a textbook and open to page 306

Date: 3/15 Goal: I can understand the momentum of two objects in a collision Independently read TB p. 306 and take cornell notes Momentum TB p. 306 and take CN 7 min

Date: 3/15 Goal: I can understand the momentum of two objects in a collision Independently read TB p. 306 and take cornell notes Momentum TB p. 306 and take CN HW: Text Book p. 307 # 1-3

Date: 3/15 Goal: I can understand the momentum of two objects in a collision Independently read TB p. 306 and take cornell notes Momentum TB p. 306 and take CN HW: Text Book p. 307 # 1-3 Last week TB p.434-442 cornell notes and #1-5 p. 442 7 min

Date: 3/17 Goal: I can understand the momentum of two objects in a collision Independently answer TB p. 308 Essential Questions

Date: 3/17 Goal: I can understand the momentum of two objects in a collision Bell Ringer: 1. During the Egg-Throwing Demonstration in the video, what was the momentum of both eggs before they collided with the sheet or wall if both eggs had a mass of .015 kg and a velocity of 4m/s? 2. Which egg experienced the greater impulse, the egg that hit the wall or the bed sheet? (Be careful here!) Which egg experienced the greater force of impact? Which egg experienced the greater time of impact? Why?

Date: 3/17 Goal: I can understand the momentum of two objects in a collision Impulse=change in momentum Both eggs stopped

Date: 3/17 Goal: I can understand the momentum of two objects in a collision Complete TB p. 308 Essential Questions with your partner 3/17 TB p. 308

Date: 3/17 Goal: I can understand the momentum of two objects in a collision 1. Complete TB p. 308 Essential Questions with your partner Independently read TB p. 312-315 and take cornell notes

Date: 3/17 Goal: I can understand the momentum of two objects in a collision 1. Complete TB p. 308 Essential Questions with your partner Independently read TB p. 312-315 and take cornell notes TB: p. 315 #1-3

Date: 3/17 Goal: I can understand the momentum of two objects in a collision Due Today TB p. 308 Essential Questions TB p. 312-315 and take cornell notes Textbook p 392-393 Part A TB: p.402 #1 and #2 Momentum in a collision WB p.127-128 Data sheet TB p. 306 and take CN Momentum video worksheets TB: p. 315 #1-3 Extra Credit: Bring in a box of unopened tissue Turn in Six Flags permission slip

Date: 3/17 Goal: I can understand the momentum of two objects in a collision Independently read TB p. 312-315 and take cornell notes

Date: 2/26 Goal: I can understand how the change in momentum can affect an object Which statement is consistent with the data collected in Experiment 1 and Experiment 2? a. A greater contact area between block and surface results in greater friction force. b. Changing the contact area has little to no effect upon the amount of friction force. c. Varying the mass of the block does not have any effect upon the amount of friction. d. For the same load, a sandpaper surface causes more friction than a plain wood surface. Experiment 1 Diagram 1 depicts a procedure that is used to measure the friction force. A horizontal force is applied to a block on a table to accelerate it from rest. One observes that the force needed to initiate the motion (accelerate it from rest) is greater than the force needed to sustain the motion at a constant speed. Masses can be added to the block, thus increasing the load (L). The force required to initiate the motion is equal to the static friction force (Fstatic). The force required to sustain the motion at a constant speed is equal to the kinetic friction force (Fkinetic). Table 1 represents typical data from such an experiment. Experiment 2 - A student decides to investigate the effect of the surface on the amount of friction. She layers the bottom of the block with coarse sandpaper and then repeats the procedure described in Experiment 1. Her data is shown in Table 2

Date: 3/16 Goal: I can understand how the change in momentum can affect an object Video

Date: 3/16 Goal: I can understand how the change in momentum can affect an object With your shoulder partner complete question #1-8 on the post video sheet

W=F (d) Fw=mg v2=2gh GPE =mgh P= W/t KE=1/2 mv2 Date: 2/27 Goal: I can expalin how the change in momentum can affect an object W=F (d) Fw=mg v2=2gh GPE =mgh P= W/t KE=1/2 mv2 Bell Ringer In the roller coaster project your team calculated the velocity of your roller coaster at the bottom of the first hill. Calculate the velocity of a 2500 kg roller coaster at the bottom of a 27m tall hill.

Date: 2/26 Goal: I can expalin how the change in momentum can affect an object With your shoulder partner complete the movie sheet from yesterday #1-8 15 min

With your shoulder partner complete WB p. 136 TEJ Date: 2/26 Goal: I can expalin how the change in momentum can affect an object With your shoulder partner complete WB p. 136 TEJ 10 min

Independently complete WB p. 137 5 min Date: 2/26 Goal: I can expalin how the change in momentum can affect an object Independently complete WB p. 137 5 min

Home work over the weekend TB p. 309 1-3,6 and p. 319 1,2,6,7 Date: 2/26 Goal: I can expalin how the change in momentum can affect an object Home work over the weekend TB p. 309 1-3,6 and p. 319 1,2,6,7 in your note book

TB p. 308 Essential Questions HW: TB p. 307 # 1-3 HW: TB: p. 315 #1-3 Date: 2/26 Goal: I can expalin how the change in momentum can affect an object Due today Notebook TB p. 306 and take CN TB p. 308 Essential Questions HW: TB p. 307 # 1-3 HW: TB: p. 315 #1-3 WB p.127-128 Momentum video and Worksheet WB p.136-137

Date: 2/26 Goal: I can expalin how the change in momentum can affect an object

As I'm sure you suspect, momentum in physics is different from "momentum" in sports on tv, as in "Yes, Chris, the Bengals really have momentum on this drive!". However, physics momentum is related to football momentum in that both concepts refer to how difficult it will be to stop something.What makes an object difficult to stop? Its mass, for one thing. After all, mass measures the inertia of an object - how much the object resists accelerating. Certainly, more mass means more momentum - the momentum of an object is directly proportional to its mass. Twice the mass means twice the momentum. Momentum is not the same as mass, though. For one thing, an object that is not moving has no momentum, no matter how much mass it has.Fast objects are also difficult to stop. Bullets have a very small mass, but you wouldn't want to try and stop one! More speed means more momentum - momentum is directly proportional to velocity. Twice the speed means twice the momentum.Since the momentum of an object is directly proportional to both its mass and its velocity,Momentum = (mass)(velocity) = mvMomentum is a vector quantity. Its direction is the same as the direction of the object's velocity.  M