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AP Physics Monday 14.09.22 Standards : Kinematics 1 D & 2D: Big Idea 3

Warm Up A ball travels 30 degrees north of east at a speed of 10 m/s. What will be the ball’s x and y displacement after 5s,. AP Physics Monday 14.09.22 Standards : Kinematics 1 D & 2D: Big Idea 3. Agenda: Warm Up Review HW Projectile Motion Notes

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AP Physics Monday 14.09.22 Standards : Kinematics 1 D & 2D: Big Idea 3

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  1. Warm Up A ball travels 30 degrees north of east at a speed of 10 m/s. What will be the ball’s x and y displacement after 5s, AP PhysicsMonday 14.09.22 Standards: Kinematics 1D & 2D: Big Idea 3 • Agenda: • Warm Up • Review HW • Projectile Motion Notes • Period of Projectiles Demo: Outside. • Projectiles Activity I –Independent Resilient IndividualsRST.11-12.9 Synthesize information from a range of sources into coherent understanding of a process, phenomenon, or concept,… Learning Goal: Students will understand the motion of a projectile and be able to use that understanding to make range predictions. Homework KAP 12

  2. Warm Up A ball is launched straight up from the ground with an initial speed of 20 m/s. How long will the ball take to reach its maximum height? AP PhysicsTuesday 14.09.23Standards: Kinematics 1D & 2D: Big Idea 3 • Agenda: • Warm Up • Guided Practice: Projectiles • Independent Practice I –Independent Resilient IndividualsRST.11-12.9 Synthesize information from a range of sources into coherent understanding of a process, phenomenon, or concept,… Learning Goal: SWBAT will troubleshoot projectile problems & refine their problem solving skills. Homework KAP #13

  3. Warm Up Find the height of a building if a ball was kicked off of the building horizontally at 30 m/s and traveled 200 m before it hit the ground. AP PhysicsWednesday 14.09.24Learning Objective: SWBAT collect data and find their reaction time using the fact that gravity accelerates objects downwardsRST.11-12.9 Synthesize information from a range of sources into coherent understanding of a process, phenomenon, or concept,… • Agenda: • Warm Up • Review Homework • Guided Practice: The cannonball x(m) Learning Goal: SWBAT diagram the physics of the cannonball/trebuchet/launched object Homework KAP#14

  4. Warm Up AP PhysicsFriday 14.09.26 Standards: Kinematics 1D & 2D: Big Idea 3RST.11-12.4 Meaning of symbols, key terms, technical jargonProblem SolversLearning Goal: SWBAT solve the cannonball problems! Agenda • Warm Up • Stamp HW • Review KAP #14 • Finish Guided Practice Cannonball • Begin in Notebook: New Cannonball problem Homework Catch up!, finish KAP #14

  5. KAP #9 Magnitude & Angle of Vectors vy (m/s) For each vector find the magnitude, angle, and the x & y components. Each mark is 1 unit. 9.05 m.s 1 m/s j 6.34° -9 m/s i -3 m/s i 7.6 m/s 3 m/s j 71.5° -9m/s j 23.2° 7 m/s i vx (m/s) 9.49 m/s -3m/s i 8.06 m/s 53.1° 4 m/s j 29.7° -4 m/s j 5 m/s 7 m/s i

  6. KAP #10 adding vectors • The pronghorn antelope, found in North America, is the best long-distance running among mammals. It has been observed to travel at an average speed of more than 55 km/hr for up to 6.0 km. Suppose the antelope runs a distance of 5.0 km in a direction 11.5 degrees north of east, turns, and then runs 1.0 km south. Calculate the resultant displacement. • In 1926, Gertrude Ederle of the United States became the first woman to swim across the English channel. Suppose Ederle swam 25.2 km east from the coast near Dover, England, then made a 90 degree turn and traveled south for 21.3 km to a point east of Calais, France. What was Ederle’s resultant displacement? • A killer whale can swim as fast as 15 m/s. Suppose a killer whale swims in one direction at this speed for 8.0 s, makes a 90 degree turn, and continues swimming in the new direction with the same speed as before. After a certain time interval, the magnitude of the resultant displacement is 180.0 m. Calculate the amount of time the whale swims after changing direction.

  7. AP Physics Math Skills Quiz Study Guide Graph the following. Find the slope, equation of best fit line, and area under the curve. • Scientific Notation • 442300000 in scientific notation • 0.00000000003 in scientific notation • 4x106 and 3x10-2 in standard form • Exponents • 4x106*2x103/7x104+8.2x101/4x10-2 • Conversions • 20 mi -> m, 20mm-> m, 12 lb -> kg, 1mm-> km • Graphing 20 16 12 x(m) Create a velocity & acceleration vs time graph using this graph 8 4 5 15 20 40 50 10 25 30 45 35 t(s)

  8. AP Physics Math Skills Quiz b. Graph the following. Find the slope, equation of best fit line, and area under the curve. • Scientific Notation • a. 9200000 in scientific notation • b. 0.000000303 in scientific notation • c. 8x105 and 4.6x10-4 in standard form • Exponents • a. 6x105*2x102/3x104+8.2x102/4x10-2 • Conversions • a. 40 mi -> m, b. 119mm-> m, c. 20 lb -> kg, d. 50mm-> km • 4. Graphing 20 16 12 x(m) a. Create a velocity & acceleration vs time graph using this graph 8 4 5 15 20 40 50 10 25 30 45 35 t(s)

  9. Graph Solution AP Physics Quiz Study Guide

  10. Graph Solution AP Physics Quiz

  11. KAP #11 • The longest snake ever found was a python that was 10.0 m long. Suppose a coordinate system large enough to measure the pythoon’s length is drawn on the ground. The snake’s tail is then placed at the origin and the snakes body is stretched so that it makes an angle of 60.0° with the positive x-axis. Find the xa and y coordinates of the snake’s head. • The landing speed of the space shuttle Columbia is 347 km/h. If the shuttle is landing at an angle of 15.0° with respect to the horizontal, what are the horizontal and vertical components of its velocity?

  12. KAP #12 • A car parachutes down from a plane 1000 m in the air at a constant speed of 15 m/s. The wind is blowing at 3 m/s to the west. • How long will it take to hit the ground? • What is the resultant velocity of the car? • What angle off of the vertical is the car moving? • What is the total distance that it will travel while in the air? • What is the horizontal displacement of the car from the point it left the plane to the point it landed?

  13. Kap #13 • A swimmer swims west across a river at 3 m/s, but the river’s current is pushing her 1m/s south. • What velocity is she traveling at across the river? (Remember velocity is speed & direction, so here you need to put the speed and the angle) • How long will it take the swimmer to swim to the other side if the river is 40 m wide? • **How far will she have traveled down the river (south) before she reaches the other side?

  14. Classwork: Projecticles Launched Horizontally • A rock is kicked horizontally off of a cliff at 20 m/s. If it traveled 1,220 m before it hit the ground, answer the following questions… • What is the ball’s initial speed in the x and y direction? • In which directions, if any is there acceleration? • What is the final velocity right before the ball touches the ground in the x direction? • How long was the rock in the air? • What was the final velocity of the rock in the y direction right before it touches the ground? • How high was the cliff?

  15. NOTEBook Assignment: The cannonball and the Fort • A cannonball is launched at an angle of 45 degrees. The explosion of the gunpowder sends the cannonball flying at 180 m/s towards the fort which is 1600 m away and 10 m high. Does the cannonball successfully hit the fort? If so will it do a lot of damage or just a little (in other words how high up will the cannonball hit the fort)? • What is the ball’s initial speed in the x and y direction? • In which directions, if any is there acceleration? • What is the final velocity right before the ball touches the ground in the x direction? • How long was the rock in the air? • What was the final velocity of the rock in the y direction right before it touches the ground? • How high was the cliff? • If the fort was not there, how long would it take for the cannonball to hit the ground? • How long would it take for the cannonball to collide with the wall? • How high up would the cannonball hit the fort?

  16. Guided Practice: The Cannonball • A cannonball is launched at an angle of 45 degrees. The explosion of the gunpowder sends the cannonball flying at 120 m/s. • What is the cannonball’s initial speed in the x and y direction? • In which directions, if any is there acceleration? • How long would the cannonball take to reach its peak? • How high is the cannonball’s peak? • How long would the cannonball be in the air? • How far does the cannonball travel? • What is the final velocity of the cannonball right before it hits the ground? • If the cannonball was tilted at a slightly lower or higher angle, what would happen to the range of the cannonball? If you can’t explain this, do the math to uncover the answer.

  17. KAP#14 • A movie director is shooting a scene that involves dropping a stunt dummy out of an airplane and into a swimming pool. The plane is 10.0 m above the ground, traveling at a velocity of 22.5 m/s in the positive x direction. The director wants to know where in the plane’s path the dummy should be dropped so that it will land in the pool. What is the dummy’s horizontal displacement? • In 1978, Geoff Capes of the UK won a competition for throwing 5 lb bricks; he threw one brick a distance of 44.0 m. Suppose the brick left capes’ hand at an angle of 45.0 degrees with respect to the horizontal. • What was the initial speed of the brick? • What was the maximum height reached by the brick? • c. If Capes threw the brick straight up with the speed found in (a), what would be the maximum height the brick could achieve?

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