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Oct. 30, 2012. AGENDA: 1 – Bell Ringer 2 – Kinematics Equations 3 – Exit Ticket. Today’s Goal: Students will be able to identify which kinematic equation to apply in each situation Homework 1. Pages 4-6. CHAMPS for Bell Ringer. C – Conversation – No Talking
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Oct. 30, 2012 AGENDA: 1 – Bell Ringer 2 – Kinematics Equations 3 – Exit Ticket Today’s Goal: Students will be able to identify which kinematic equation to apply in each situation Homework 1. Pages 4-6
CHAMPS for Bell Ringer C – Conversation – No Talking H – Help – RAISE HAND for questions A – Activity – Solve Bell Ringer on binder paper. Homework out on desk M – Materials and Movement – Pen/Pencil, Notebook or Paper P – Participation – Be in assigned seats, work silently S – Success – Get a stamp! I will collect!
October 30th (p. 13) Objective: Students will be able to identify which kinematic equation to apply in each situation Bell Ringer: • How many quantities did we underline in each problem? • How many known variables are you given in each problem? • How many unknown variables are you asked to find in each problem? • How do you decide what equation to use? • What do the equations mean to you?
October 30th (p. 13) Objective: Students will be able to identify which kinematic equation to apply in each situation Bell Ringer: • How many quantities did we underline in each problem? • How many known variables are you given in each problem? • How many unknown variables are you asked to find in each problem? • How do you decide what equation to use? • What do the equations mean to you?
October 30th (p. 13) Objective: Students will be able to identify which kinematic equation to apply in each situation Bell Ringer: • How many quantities did we underline in each problem? • How many known variables are you given in each problem? • How many unknown variables are you asked to find in each problem? • How do you decide what equation to use? • What do the equations mean to you?
October 30th (p. 13) Objective: Students will be able to identify which kinematic equation to apply in each situation Bell Ringer: • How many quantities did we underline in each problem? • How many known variables are you given in each problem? • How many unknown variables are you asked to find in each problem? • How do you decide what equation to use? • What do the equations mean to you?
October 30th (p. 13) Objective: Students will be able to identify which kinematic equation to apply in each situation Bell Ringer: • How many quantities did we underline in each problem? • How many known variables are you given in each problem? • How many unknown variables are you asked to find in each problem? • How do you decide what equation to use? • What do the equations mean to you?
October 30th (p. 13) Objective: Students will be able to identify which kinematic equation to apply in each situation Bell Ringer: • How many quantities did we underline in each problem? • How many known variables are you given in each problem? • How many unknown variables are you asked to find in each problem? • How do you decide what equation to use? • What do the equations mean to you?
October 30th (p. 13) Objective: Students will be able to identify which kinematic equation to apply in each situation Bell Ringer: • How many quantities did we underline in each problem? • How many known variables are you given in each problem? • How many unknown variables are you asked to find in each problem? • How do you decide what equation to use? • What do the equations mean to you?
Shout Outs Period 5 – Chris Period 7 – Latifah, Shawn
Oct. 30, 2012 AGENDA: 1 – Bell Ringer 2 – Kinematics Equations 3 – Exit Ticket Today’s Goal: Students will be able to identify which kinematic equation to apply in each situation Homework 1. Pages 4-6
Week 8 Weekly Agenda Monday – Kinematic Equations I Tuesday – Kinematic Equations II Wednesday – Kinematic Equations III Thursday – Review Friday – Review Unit Test next week!
What are equations? Equations are relationships. Equations describe our world. Equations have changed the course of history.
CHAMPS for Problems p. 4-6 C – Conversation – No Talking unless directed to work in groups H – Help – RAISE HAND for questions A – Activity – Solve Problems on Page 4-6 M – Materials and Movement – Pen/Pencil, Packet Pages 4-6 P – Participation – Complete Page 4-6 S – Success – Understand all Problems
Notes: Kinematic Equations The Four Kinematic Equations: vf = vi + aΔt Δx = viΔt + aΔt2 2 vf2 = vi2 + 2aΔx Δx = (vf + vi)Δt 2
Solving Problems: THE EASY WAY (p. 4) • Starting from rest, the Road Runner accelerates at 3 m/s2for ten seconds. What is the final velocity of the Road Runner? vi = 0 m/s a = 3 m/s2 Δt = 10 seconds vf = ?
Notes: Kinematic Equations The Four Kinematic Equations: vf = vi + aΔt Δx = viΔt + aΔt2 2 vf2 = vi2 + 2aΔx Δx = (vf + vi)Δt 2
Solving Problems: THE EASY WAY (p. 4) • Starting from rest, the Road Runner accelerates at 3 m/s2for ten seconds. What is the final velocity of the Road Runner? vi = 0 m/s a = 3 m/s2 Δt = 10 seconds vf = ? vf = vi + aΔt
Solving Problems: THE EASY WAY (p. 4) • Starting from rest, the Road Runner accelerates at 3 m/s2for ten seconds. What is the final velocity of the Road Runner? vi = 0 m/s a = 3 m/s2 Δt = 10 seconds vf = ? vf = vi + aΔt vf= 0 m/s + (3 m/s2)(10 s) =
Solving Problems: THE EASY WAY (p. 4) • Starting from rest, the Road Runner accelerates at 3 m/s2for ten seconds. What is the final velocity of the Road Runner? vi = 0 m/s a = 3 m/s2 Δt = 10 seconds vf = ? vf = vi + aΔt vf= 0 m/s + (3)(10) = 30 m/s
Solving Problems: THE EASY WAY (p. 4 2. Starting from rest, the Road Runner accelerates at 3 m/s2for ten seconds. How far does the Road Runner travel during the ten second time interval? vi = 0 m/s a = 3 m/s2 Δt = 10 seconds Δx = ? Δx = viΔt + aΔt2 2
Solving Problems: THE EASY WAY (p. 4) 2. Starting from rest, the Road Runner accelerates at 3 m/s2for ten seconds. How far does the Road Runner travel during the ten second time interval? vi = 0 m/s a = 3 m/s2 Δt = 10 seconds Δx = ? Δx = viΔt + aΔt2 2 Δx = (0)(10) + (3)(10)2 2
Solving Problems: THE EASY WAY (p. 4) 2. Starting from rest, the Road Runner accelerates at 3 m/s2for ten seconds. How far does the Road Runner travel during the ten second time interval? vi = 0 m/s a = 3 m/s2 Δt = 10 seconds Δx = ? Δx = viΔt + aΔt2 2 Δx = (0)(10) + (3)(10)2 2 Δx= 0 + 150 m = 150 m
Solving Problems: THE EASY WAY (p. 4 3. A bullet starting from rest accelerates at 40,000 m/s2down a 0.5 m long barrel. What is the velocity of the bullet as it leaves the barrel of the gun? vi = 0 m/s a = 40,000 m/s2Δx = 0.5 m vf = ?
Notes: Kinematic Equations The Four Kinematic Equations: vf = vi + aΔt Δx = viΔt + aΔt2 2 vf2 = vi2 + 2aΔx Δx = (vf + vi)Δt 2
Solving Problems (p. 4) 3. A bullet starting from rest accelerates at 40,000 m/s2down a 0.5 m long barrel. What is the velocity of the bullet as it leaves the barrel of the gun? vi = 0 m/s a = 40,000 m/s2Δx = 0.5 m vf = ? vf2 = vi2 + 2aΔx
Solving Problems (p. 4) 3. A bullet starting from rest accelerates at 40,000 m/s2down a 0.5 m long barrel. What is the velocity of the bullet as it leaves the barrel of the gun? vi = 0 m/s a = 40,000 m/s2Δx = 0.5 m vf = ? vf2 = vi2 + 2aΔx vf2= (0)2 + 2(40,000)(0.5)
Solving Problems (p. 4) 3. A bullet starting from rest accelerates at 40,000 m/s2down a 0.5 m long barrel. What is the velocity of the bullet as it leaves the barrel of the gun? vi = 0 m/s a = 40,000 m/s2Δx = 0.5 m vf = ? vf2 = vi2 + 2aΔx vf2= (0)2 + 2(40,000)(0.5) vf2= 40,000 vf= 200 m/s
Solving Problems (p. 4) 4. A car traveling at 20 m/s applies its brakes and comes to a stop in four seconds. What is the acceleration of the car? vi = 20 m/s vf = 0 m/s Δt = 4 seconds a = ?
Notes: Kinematic Equations The Four Kinematic Equations: vf = vi + aΔt Δx = viΔt + aΔt2 2 vf2 = vi2 + 2aΔx Δx = (vf + vi)Δt 2
Notes: Kinematic Equations The Four Kinematic Equations: vf = vi + aΔt Δx = viΔt + aΔt2 2 vf2 = vi2 + 2aΔx Δx = (vf + vi)Δt 2
Solving Problems (p. 4) 4. A car traveling at 20 m/s applies its brakes and comes to a stop in four seconds. What is the acceleration of the car? vi = 20 m/s vf = 0 m/s Δt = 4 seconds a = ? vf = vi + aΔt
Solving Problems (p. 4) 4. A car traveling at 20 m/s applies its brakes and comes to a stop in four seconds. What is the acceleration of the car? vi = 20 m/s vf = 0 m/s Δt = 4 seconds a = ? vf = vi + aΔt 0 = 20 + 4a
Solving Problems (p. 4) 4. A car traveling at 20 m/s applies its brakes and comes to a stop in four seconds. What is the acceleration of the car? vi = 20 m/s vf = 0 m/s Δt = 4 seconds a = ? vf = vi + aΔt 0 = 20 + 4a 0 = 20 + 4a
Solving Problems (p. 4) 4. A car traveling at 20 m/s applies its brakes and comes to a stop in four seconds. What is the acceleration of the car? vi = 20 m/s vf = 0 m/s Δt = 4 seconds a = ? vf = vi + aΔt 0 = 20 + 4a -20 + 0 = 20 + 4a + -20 -20 = 4a
Solving Problems (p. 4) 4. A car traveling at 20 m/s applies its brakes and comes to a stop in four seconds. What is the acceleration of the car? vi = 20 m/s vf = 0 m/s Δt = 4 seconds a = ? vf = vi + aΔt 0 = 20 + 4a -20 + 0 = 20 + 4a + -20 -20/4 = 4a/4
Solving Problems (p. 4) 4. A car traveling at 20 m/s applies its brakes and comes to a stop in four seconds. What is the acceleration of the car? vi = 20 m/s vf = 0 m/s Δt = 4 seconds a = ? vf = vi + aΔt 0 = 20 + 4a -20 + 0 = 20 + 4a + -20 -20/4 = 4a/4 a = -5 m/s2
Solving Problems (p. 5) 5. A car traveling at 20 m/s applies its brakes and comes to a stop in four seconds. How far does the car travel before coming to a stop? vi = 20 m/s vf = 0 m/s Δt = 4s Δx = ?
Notes: Kinematic Equations The Four Kinematic Equations: vf = vi + aΔt Δx = viΔt + aΔt2 2 vf2 = vi2 + 2aΔx Δx = (vf + vi)Δt 2
Notes: Kinematic Equations The Four Kinematic Equations: vf = vi + aΔt Δx = viΔt + aΔt2 2 vf2 = vi2 + 2aΔx Δx = (vf + vi)Δt 2
Solving Problems (p. 5) 5. A car traveling at 20 m/s applies its brakes and comes to a stop in four seconds. How far does the car travel before coming to a stop? vi = 20 m/s vf = 0 m/s Δt = 4s Δx = ? Δx = (vf+ vi)Δt 2
Solving Problems (p. 5) 5. A car traveling at 20 m/s applies its brakes and comes to a stop in four seconds. How far does the car travel before coming to a stop? vi = 20 m/s vf = 0 m/s Δt = 4s Δx = ? Δx = (vf + vi)Δt = (0 + 20)(4) = 40 m 2 2
Solving Problems (p. 5) 6. The USS Enterprise accelerates from rest at 100,000 m/s2 for a time of four seconds. How far did the ship travel in that time?
Solving Problems (p. 5) 6. The USS Enterprise accelerates from rest at 100,000 m/s2for a time of four seconds. How far did the ship travel in that time? vi = 0 m/s a = 100,000 m/s2Δt = 4s Δx = ?