Tuesday, Mar. 10th p. 204, 205

Tuesday, Mar. 9th

2043/10/15 Tues.L.T.: I can review for our test by participating in bell review, making my notecard, and critiquing our roller coaster analysis poster (pink poster).DO NOW: Take out your tri-fold paper from yesterday and make sure everything is completed and ready for publishing.……………………….Reflection: Did I finish my tri-fold paper? Did I turn it in? Did I participate in critiquing the pink poster analysis? Did I participate in bell review? Did I prepare my notecard to use on the test tomorrow?

205Title: Publishing Pink Poster/Review

Tape in notecard

Scratch paper for bell review

Publishing Status: 1) complete 2) neat, legible 3) clearly marked with name and section

Pink Poster

• Names and class period on the back.• Take a small piece of tape and put your poster up where it

belongs along our RC track (pink poster).

• Walk through (5 mins) to look along the wall. • YOUR JOB: Put a star on the posters that you believe to have

the most accurate information and follows the patterns we identified yesterday. ? marks go on sections that you are unsure about.• -VL 2• -Stars and ? go on right side of poster.• -1 star per section

2• ChunDoong was homesick. (He had been taken to his

grandma’s house while his mom was away…) He wanted to calculate how fast he would have to travel on average in miles per minute if he wanted to cover the 200 miles in an hour.

• What would have to be ChunDoong’s average speed in miles per minute?

1 • Balanced or unbalanced forces and why:

• Mom’s car trying to merge from local to freeway traffic.

3 • What other types of potential energy (STORED ENERGY) are there besides gravitational potential energy?

• Name 3 and give specific examples of each.

3

At this moment, the ball has been placed on top of the ramp and is not moving.1) Describe what kind of energy it has and why.2) Where did its energy come from?

1

What are the forces acting upon this RC car at this moment? Draw a simple diagram and use arrows and labeling to put under the camera along with your response.

3

• Short story of the fan car:• Wesley was excited to try out his fan car. He carried it to the track,

placed it on the start line, and clicked the fan on. The motor began to spin the propellers and the car began to move forward.

• “Yes! It’s working!” shouted Wesley as he pumped his fist in the air.• As Wesley eagerly searched for people to share his excitement with,

he failed to notice a broken piece of pencil on the track. The fan car ran into the wood, fell over, and a propeller broke off.

• When Sonney pointed out what happened, Wesley got sad.

• Q: Using arrows, show all energy transfers that happened in this story. If possible, identify what KINDS of energy exist between each transfer.

Calculate average speed given the data above:

d T1 T2 T3 Avg. Time

Avg. Speed

12 meters

3.38 sec

5.42 sec

4.90 sec. ???

2

1 • Explain how friction can help an object start moving.

1• A marble rolled on an icy surface will roll at pretty

much the same speed and direction until it runs into an obstacle.

• Explain how this is an example of balanced forces.

3 • Back to Wesley’s fan story:

• Draw a bar graph of PE and KE of the fan car before Wesley turns the fan on.

• The car has been going for an hour (it’s still going) and its battery is almost depleted. Draw another bar graph of PE and KE of the fan car at this point.

1, 2, 3• Sometimes on nice days, Ms. Kim will go to the park to throw a softball

around and get some hitting practice in. • On a particularly solid hit, the ball travelled in an arc from home plate

where Ms. Kim was hitting to left-center field, about 150 meters away. The ball took about 6 seconds to get there.

• 1. Calculate average speed in meters/second of the ball’s travel.• 2. Do an energy flow chart that shows all of the energy transfers from

the beginning of the ball’s journey to the end.• 3. Diagram all of the forces acting on the ball when it’s hit with the bat,

travelling in the air, and when it hits the ground.