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Nov. 7th1. What do you think accelerates downwards faster when you drop it: a feather or a hammer? Explain why you think so.

Nov. 7th1. What do you think accelerates downwards faster when you drop it: a feather or a hammer? Explain why you think so.

Nov. 7th1. What do you think accelerates downwards faster when you drop it: a feather or a hammer? Explain why you think so.

Nov. 7th1. What do you think accelerates downwards faster when you drop it: a feather or a hammer? Explain why you think so.

Nov. 7th

AGENDA:

1 – Bell Ringer

2 – Free Fall Acceleration

3 – Exit Ticket

Today’s Goal:

Students will be able to explain how free fall acceleration occurs.

Homework

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!

Nov. 7th

Objective:

Students will be able to explain how free fall acceleration occurs.

Bell Ringer:

1. What do you think accelerates downwards faster when you drop it: a feather or a hammer? Explain why you think so.

2. Are there any situations in which you would think the opposite happens?

Nov. 7th

Objective:

Students will be able to explain how free fall acceleration occurs.

Bell Ringer:

1. What do you think accelerates downwards faster when you drop it: a feather or a hammer? Explain why you think so.

2. Are there any situations in which you would think the opposite happens?

Nov. 7th

Objective:

Students will be able to explain how free fall acceleration occurs.

Bell Ringer:

1. What do you think accelerates downwards faster when you drop it: a feather or a hammer? Explain why you think so.

2. Are there any situations in which you would think the opposite happens?

Objective:

Students will be able to explain how free fall acceleration occurs.

Bell Ringer:

2. Are there any situations in which you would think the opposite happens?

Objective:

Students will be able to explain how free fall acceleration occurs.

Bell Ringer:

2. Are there any situations in which you would think the opposite happens?

Objective:

Students will be able to explain how free fall acceleration occurs.

Bell Ringer:

2. Are there any situations in which you would think the opposite happens?

Objective:

Students will be able to explain how free fall acceleration occurs.

Bell Ringer:

2. Are there any situations in which you would think the opposite happens?

Nov. 7th

AGENDA:

1 – Bell Ringer

2 – Free Fall Acceleration

3 – Exit Ticket

Today’s Goal:

Students will be able to explain how free fall acceleration occurs.

Homework

CHAMPS for 11/7

C – Conversation – No Talking unless directed to work in groups

H – Help – RAISE HAND for questions

A – Activity – Solve Problems on Page 5-8

M – Materials and Movement – Pen/Pencil, Packet Pages 5-8

P – Participation – Complete Page 5-8

S – Success – Understand all Problems

Free Fall

When you are in free fall:

Is your velocity changing?

Are you accelerating?

All objects on earth accelerate downward at

-9.81 m/s2

Example

Theodore drops a pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.

Example

Theodore drops a pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.

Example

Theodore dropsa pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.

Example

Theodore dropsa pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.

vi = 0 m/s

Δx = -8.52 m

Δt = ?

a = -9.81 m/s2

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

Example

Theodore dropsa pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.

vi = 0 m/s

Δx = -8.52 m

Δt = ?

a = -9.81 m/s2

Δx= viΔt + aΔt2

2

ExampleTheodore dropsa pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.

vi = 0 m/s

Δx = -8.52 m

Δt = ?

a = -9.81 m/s2

Δx= viΔt + aΔt2

2

ExampleTheodore dropsa pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.

vi = 0 m/s Δx = viΔt + aΔt2

2

-8.52 = -9.81Δt2

2

ExampleTheodore dropsa pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.

vi = 0 m/s Δx = viΔt + aΔt2

2

-8.52 = -9.81Δt2

2

-8.52 = -4.95Δt2

ExampleTheodore dropsa pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.

vi = 0 m/s Δx = viΔt + aΔt2

2

-8.52 = -9.81Δt2

2

-8.52 = -4.95Δt2

1.72 = Δt2

ExampleTheodore dropsa pile of roof shingles from the top of a roof located 8.52 meters above the ground. Determine the time required for the shingles to reach the ground.

vi = 0 m/s Δx = viΔt + aΔt2

2

-8.52 = -9.81Δt2

2

-8.52 = -4.95Δt2

1.72 = Δt2

1.32 s = Δt

Example

Rex Things throws his mother\'s crystal vase vertically upwards with an initial velocity of 26.2 m/s. Determine the height to which the vase will rise above its initial height.

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