Unit 2, Day 19

Review

Review Activities Free Body Diagrams (Notes) Class Work Whiteboard Review Break Whiteboard Review

Free Body Diagrams #1: Applied Force

Force put on object by person Direction of force causes movement in SAME

direction

Free Body Diagrams #2: Force of Gravity (Weight)

Force the earth attracts an object with Always points “down” towards earth

Free Body Diagrams #3: Normal Force

Always perpendicular and upward from surface Newton’s 3rd Law: Equal and Opposite

Free Body Diagrams #4: Friction Force

Force made AGAINST object’s movement along the surface

Free Body Diagrams A book is at rest on a table top.

Notes If there is no acceleration, opposing forces

should be equal! No Acceleration

Constant Velocity Rest

Free Body Diagrams A girl is holding onto a rope from the ceiling

motionless.

Free Body Diagram An egg is free-falling from a nest in a tree.

Neglect air resistance.

Free Body Diagram An egg is falling (not freely, do not neglect air

resistance) from a nest in a tree.

Free Body Diagram A rightward force is applied to a book in order

to move it across a desk with a rightward acceleration. Include friction.

Free Body Diagram A rightward force is applied to a book in order

to move it across a desk at constant velocity. Include friction.

Free Body Diagram A car is parked on a sloped street.

Free Body Diagram A hot air balloon is accelerating upward.

Include air resistance.

Free Body Diagram A car is coasting (the driver is not touching

the pedals) to the right and slowing down.

Break

Whiteboard Review 60 seconds to make a school appropriate

name Don’t just use your initials Don’t shout out answers Wait for 5-4-3-2-1 You may use notes

#1 Distance, speed, and mass are examples of

_________.

#2 Displacement, velocity, acceleration, and

force are examples of ____________.

#3 A scalar has which of the following?

A. MeasurementB. DirectionC. Letter without an arrowD. Letter with an arrow

#4 Draw the xy coordinate graph. Show:

Which axis is X? Which axis is Y? Which way is positive, which way is negative?

Switch!

Practice Mrs. Larkin runs forward 10 feet. She then

turns around and runs back 7 feet. What distance did she run?

Practice Mrs. Larkin runs forward 13 feet. She then

turns around and runs back 6 feet. What displacement did she run?

Switch!

Practice Shadow runs 3 meters east, then 2 meters

north, then 3 meters west. What distance did she run?

Practice Shadow runs 4 inches north, then 5 inches

east, then 4 inches south. What displacement did she run?

Switch!

Practice

Ms. Parsons drives to and from Da Vinci

Design, which is located 5 miles from her

house.

A. What is the total distance she drives every day?

B. What is her displacement every day?

Practice La Luz runs a complete circle around the

classroom. What displacement did she run? (Use feet)

Switch!

Practice

La Luz and Shadow are racing each other

around a circular track. The track is 500

meters around and 159 meters across. La Luz

gets tired and stops halfway around. Shadow

finishes the race.

A. Who has the greater displacement?

B. By how many meters?

500 meters around

159 meter

sacross

Practice

La Luz and Shadow are racing each other

around a circular track. The track is 500

meters around and 159 meters across. La Luz

gets tired and stops halfway around. Shadow

finishes the race.

A. Who ran the greater distance?

B. By how many meters?

500 meters around

159 meter

sacross

Switch!

Practice Which of the following are units for velocity?

1. meters/second2

2. meters/second3. feet/hour4. miles5. kilometers/minute

Practice - Whiteboards Running 59.8 miles in 2 hours

When finished with whiteboards, get this problem into notebooks

Switch!

Practice - Whiteboards Running 150.6 kilometers in 3 hours

When finished with whiteboards, get this problem into notebooks

Question Give an example of the units for acceleration

using feet and seconds.

Switch!

Question What are the two equations involving

acceleration?

Question As a school bus slows to a stop, it slows from

9.00 m/s to 0.00 m/s in 5.00 seconds. What is its acceleration?

Switch!

Question A skateboarder goes from a standstill to a

speed of6.7 m/s in 12 seconds. What is their acceleration

Question A sprinter increases from 5.0 m/s to 7.5 m/s

over a period of 1.25 seconds. What is their acceleration?

Switch!

Whiteboard Activity A 1200 kg car is driving at 10 m/s. When it

reaches a new speed limit sign, it accelerates to a speed of 35 m/s. The car is able to reach this speed within a span of 13 meters.

What is the car’s average velocity?

Switch!

Whiteboard Activity A 1200 kg car is driving at 10 m/s. When it

reaches a new speed limit sign, it accelerates to a speed of 35 m/s. The car is able to reach this speed within a span of 13 meters.

What is the car’s change in time?

Whiteboard Activity A 1200 kg car is driving at 10 m/s. When it

reaches a new speed limit sign, it accelerates to a speed of 35 m/s. The car is able to reach this speed within a span of 13 meters.

What is the car’s acceleration?

Switch!

Whiteboard Activity A 1200 kg car is driving at 10 m/s. When it

reaches a new speed limit sign, it accelerates to a speed of 35 m/s. The car is able to reach this speed within a span of 13 meters.

What is the force on the car?

Question What is Newton’s First Law?

Switch!

Question What is Newton’s Second Law?

Question What is Newton’s Third Law?

Whiteboards A soccer player kicks a 0.5 kg stationary ball

with a force of 45-Newtons. What is the force on the player’s foot?

Switch!

Whiteboards A person is standing on a bathroom scale.

They then jump upwards. At the instant the student pushes off, what happens to what the scale says about the weight?

Free Body Diagrams

Switch!

Free Body Diagrams

Free Body Diagrams

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Free Body Diagrams

Free Body Diagrams

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Free Body Diagrams

Free Body Diagrams

Free Body Diagrams

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Free Body Diagrams

Free Body Diagrams

Free Body Diagrams

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Free Body Diagrams

Free Body Diagrams

Free Body Diagrams

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Free Body Diagrams

Free Body Diagrams

Free Body Diagrams

Homework Review for Exam

YouTube videos for review problems Thursday 11/12 for even classes Friday 11/13 for odd classes