The plan from here
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The plan from here. Monday & Tuesday – One new idea & Review Wednesday – Lab Friday – Review Monday – Enjoy your 3 day weekend Tuesday – First Test. Linear Kinematics. Displacement Distance Speed and Velocity. Linear Kinematics. Kinematics = “ the study of motion” Forms of Motion

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The plan from here

The plan from here

  • Monday & Tuesday – One new idea & Review

  • Wednesday – Lab

  • Friday – Review

  • Monday – Enjoy your 3 day weekend

  • Tuesday – First Test


Linear kinematics

Linear Kinematics

Displacement Distance

Speed and Velocity


Linear kinematics1

Linear Kinematics

Kinematics = “ the study of motion”

Forms of Motion

1. Linear

  • translation

  • all points on the body move the same distance in the same direction in the same amount of time

    2. Angular

  • rotation

    3. General

  • translation and rotation


New terms

New Terms

  • Distance –

    • length of path travelled.

    • In meters

  • Displacement-

    • Change in position

    • Vector (Includes direction)

    • Also in meters


Distance

Distance

  • What is the distance traveled in this picture?


Distance1

Distance

  • What is the displacement of the person in this picture?


Distance2

Distance

  • What is the displacement of the person in this picture?


Distance and displacement

Distance and Displacement

Starting from origin, O a person walks 90-m east, then turns around and walks 40-m west.

Q: What is the total walked distance?


Distance and displacement1

Distance and Displacement

Starting from origin, O a person walks 90-m east, then turns around and walks 40-m west.

Q: What is the total walked distance? A: 130-m


Distance and displacement2

Distance and Displacement

Starting from origin, O a person walks 90-m east, then turns around and walks 40-m west.

Q: What is the total walked distance? A: 130-m

Q: What is the displacement?


Distance and displacement3

Distance and Displacement

Starting from origin, O a person walks 90-m east, then turns around and walks 40-m west.

Q: What is the total walked distance? A: 130-m

Q: What is the displacement? A: 50-m, due east. (or at 0 deg)


New symbol

New Symbol

  • Δ – “Delta”

    • Means “change in”

    • Final value – initial value

  • Δa = change in a = af – ai

  • Δb = change in b = bf – bi

  • Etc.


New symbol1

New Symbol

  • So:

    • x is horizontal position

    • Δx is “change in x”

    • Δx is “horizontal displacement”

    • Δy is “vertical displacement”


Displacement

Displacement

The displacementDx is a vector that points from the initial position xi to the final position xf.

Dx = xf - xi

SI Unit of Displacement: meter (m)


Question

Question:

  • The Earth is 1.5 * 1011 meters from the sun.

  • If the orbit is a perfect circle, what is the distance the earth moves in six months?

  • What is the size of the displacement?


Question1

Question:

  • The Earth is 1.5 * 1011 meters from the sun.

  • If the orbit is a perfect circle, what is the distance the earth moves in six months?

  • 1 half orbit = 2 p r /2 = (3.14)* 1.5 * 1011 =4.7 * 1011 m

  • What is the displacement?

  • Twice the radius = 2 *1.5* 1011 =3.0 * 1011 m


Question2

Question:

  • The Earth is 1.5 * 1011 meters from the sun.

  • If the orbit is a perfect circle, what is the distance the earth moves in twelve months?

  • What is the displacement?


Question3

Question:

  • The Earth is 1.5 * 1011 meters from the sun.

  • If the orbit is a perfect circle, what is the distance the earth moves in twelve months?

  • 1 full orbit = 2 p r = 2*(3.14)* 1.5 * 1011 =9.4 * 1011 m

  • What is the displacement?

  • 0. It has made a full circle to its starting point


Speed vs velocity

Speed vs. Velocity

Velocity, v(meters/second)

  • Vector (include direction)

  • rate of change of displacement

  • change in displacement per unit time

    Speed(also meters/second)

  • No direction necessary

  • Rate of change of distance

  • Change in distance per unit time


Velocity and speed

Velocity and speed

  • Speed is scalar. Has no direction.

    • 8 m/s

  • Velocity is a vector. It does have direction.

    • 8 m/s North

    • 8 m/s at 53 degrees.

    • 8 m/s up


Equations

Equations

  • Speed

    • Average Speed = distance traveled / time

  • Velocity

    • Average Velocity = displacement / time

    • v = Δx/t (or Δy/t)

  • For those of you in calculus:

    • v = dx/dt or dy/dt


Question4

Question:

  • The Earth is 1.5 * 1011 meters from the sun.

  • A year is 3.2 * 107 seconds.

  • If the orbit is a perfect circle, what is the speed of the earth over six months?

  • What is the velocity?


Question5

Question:

  • The Earth is 1.5 * 1011 meters from the sun.

  • A year is 3.2 * 107 seconds.

  • If the orbit is a perfect circle, what is the speed of the earth over six months?

  • Distance / time

  • 4.7 * 1011 m / 1.6 * 107s = 3.0 * 104 m/s

  • What is the velocity?

  • Displacement / time

  • 3.0 * 1011 m / 1.6 * 107s = 1.9 * 104 m/s


Question6

Question:

  • The Earth is 1.5 * 1011 meters from the sun.

  • A year is 3.2 * 107 seconds.

  • If the orbit is a perfect circle, what is the speed of the earth over one year?

  • What is the velocity?

  • Displacement / time


Question7

Question:

  • The Earth is 1.5 * 1011 meters from the sun.

  • A year is 3.2 * 107 seconds.

  • If the orbit is a perfect circle, what is the speed of the earth over one year?

  • Distance / time

  • 9.4 * 1011 m / 3.2 * 107s = 3.0 * 104 m/s

  • What is the velocity?

  • Displacement / time

  • 0. Displacement was zero, so velocity is zero as well.


The plan from here

  • The SI base unit of length is the __________.

  • a. candela

  • b. meter

  • c. kilogram

  • d. mole


The plan from here

  • The SI base unit of length is the __________.

  • a. candela

  • b. meter

  • c. kilogram

  • d. mole


The plan from here

  • According to the second rule for significant figures, how many significant figures are in the number 0.36007?

    • A 5

    • B 6

    • C 3

    • D 4


The plan from here

  • According to the second rule for significant figures, how many significant figures are in the number 0.36007?

    • A 5

    • B 6

    • C 3

    • D 4


The plan from here

  • The largest metric unit listed here is the:

    • A Hectometer

    • B Millimeter

    • C Decimeter

    • D Kilometer


The plan from here

  • The largest metric unit listed here is the:

    • A Hectometer

    • B Millimeter

    • C Decimeter

    • D Kilometer


The plan from here

  • The length of one paperclip is represented by:

    • A 1 millimeter

    • B 2.5 centimeters

    • C 3 dekameters

    • D 10 kilometers


The plan from here

  • The length of one paperclip is represented by:

    • A 1 millimeter

    • B 2.5 centimeters

    • C 3 dekameters

    • D 10 kilometers


The plan from here

  • Convert 25 g to mg.

  • A 250 mg

  • B 25 000 mg

  • C 250 000 mg

  • D 2500 mg


The plan from here

  • Convert 25 g to mg.

  • A 250 mg

  • B 25 000 mg

  • C 250 000 mg

  • D 2500 mg


The plan from here

  • What is the significant figure rounding rule for addition and subtraction?

    • A Round to the GREATEST number of significant figures with relationship to the decimal

    • B Round to the LEAST number of significant figures with relationship to the decimal

    • C Round the answer to match the measurement with the LEAST total number of significant figures

    • D Round the answer to match the measurement with the GREATEST total number of significant figures


The plan from here

  • What is the significant figure rounding rule for addition and subtraction?

    • A Round to the GREATEST number of significant figures with relationship to the decimal

    • B Round to the LEAST number of significant figures with relationship to the decimal

    • C Round the answer to match the measurement with the LEAST total number of significant figures

    • D Round the answer to match the measurement with the GREATEST total number of significant figures


The plan from here

  • The smallest metric unit listed here is the:

    • A Hectogram

    • B Milligram

    • C Decigram

    • D Kilogram


The plan from here

  • The smallest metric unit listed here is the:

    • A Hectogram

    • B Milligram

    • C Decigram

    • D Kilogram


The plan from here

  • A kilogram means

  • 1/1000 of a gram

  • 1/100 of a gram

  • 1000 grams

  • 10000 grams


The plan from here

  • A kilogram means

  • 1/1000 of a gram

  • 1/100 of a gram

  • 1000 grams

  • 10000 grams


The plan from here

  • One millisecond means1/1000 of a second1/100 of a second1000 seconds10000 seconds


The plan from here

  • One millisecond means1/1000 of a second1/100 of a second1000 seconds10000 seconds


The plan from here

  • If you had 0.005 liters of water, you would have:

  • A 50 ml

  • B 50 μl

  • C 5 ml

  • D 0.5 ml


The plan from here

  • If you had 0.005 liters of water, you would have:

  • A 50 ml

  • B 50 μl

  • C 5 ml

  • D 0.5 ml


The plan from here

  • The mass of one paperclip is probably about:

    • A 1 milligram

    • B 100 kilograms

    • C 20 decigrams

    • D 1 gram


The plan from here

  • The mass of one paperclip is probably about:

    • A 1 milligram

    • B 100 kilograms

    • C 20 decigrams

    • D 1 gram


The plan from here

  • One centivoltmeans1/1000 of a volt1/100 of a volt1000 of a volt10000 a volt


The plan from here

  • One centivoltmeans1/1000 of a volt1/100 of a volt1000 of a volt10000 a volt


The plan from here

  • 10,000,000 meters is the same as:

  • A 10 megametersB 1 gigameterC 10 millimetersD 10 micrometers


The plan from here

  • 10,000,000 meters is the same as:

  • A 10 megametersB 1 gigameterC 10 millimetersD 10 micrometers


The plan from here

  • What is the significant figure rounding rule for addition and subtraction?

    • A Round to the GREATEST number of significant figures with relationship to the decimal

    • B Round to the LEAST number of significant figures with relationship to the decimal

    • C Round the answer to match the measurement with the LEAST total number of significant figures

    • D Round the answer to match the measurement with the GREATEST total number of significant figures


The plan from here

  • Zeros after a non-zero number, but before the decimal are NOT significant,

    • A Unless the decimal IS NOT written

    • B Unless the decimal IS written

    • C Under any circumstance


The plan from here

  • Zeros after a non-zero number, but before the decimal are NOT significant,

    • A Unless the decimal IS NOT written

    • B Unless the decimal IS written

    • C Under any circumstance


The plan from here

  • Zeros after a non-zero number, but before the decimal are NOT significant,

    • A Unless the decimal IS NOT written

    • B Unless the decimal IS written

    • C Under any circumstance


The plan from here

  • 1000 centimeters is equal to:

  • 1 meter

  • 1 hectometer

  • 1 kilometer

  • 1 decameter


The plan from here

  • 1000 centimeters is equal to:

  • 1 meter

  • 1 hectometer

  • 1 kilometer

  • 1 decameter


The plan from here

  • Which of the following is a typical height for a person:

  • A) 182 cm

  • B) 18.2 m

  • C) 182 mm

  • D) .182 km


The plan from here

  • Which of the following is a typical height for a person:

  • A) 182 cm

  • B) 18.2 m

  • C) 182 mm

  • D) .182 km


The plan from here

  • The metric prefix “hecto” is equal to how many basic units?

    • A1000

    • B 100

    • C 0.1

    • D 0.001


The plan from here

  • The metric prefix “hecto” is equal to how many basic units?

    • A1000

    • B 100

    • C 0.1

    • D 0.001


The plan from here

  • The multiplier for SI units with the prefix mega is __________.

  • a. 1/1,000,000

  • b. 1/1000

  • c. 1000

  • d. 1,000,000


The plan from here

  • The multiplier for SI units with the prefix mega is __________.

  • a. 1/1,000,000

  • b. 1/1000

  • c. 1000

  • d. 1,000,000


The plan from here

  • 1/1000 of a microgram is:

  • gigagramnanogrammilligramcentigram


The plan from here

  • 1/1000 of a microgram is:

  • gigagramnanogrammilligramcentigram


The plan from here

  • When converting from grams to milligrams, one must:

    • A Move the decimal point to the left or divide

    • B Move the decimal point to the right or divide

    • C Move the decimal point to the left or multiply

    • D Move the decimal point to the right or multiply


The plan from here

  • When converting from grams to milligrams, one must:

    • A Move the decimal point to the left or divide

    • B Move the decimal point to the right or divide

    • C Move the decimal point to the left or multiply

    • D Move the decimal point to the right or multiply


The plan from here

  • Which of the following operations would yield an answer of 0.5417 to the correct number of significant digits?

  • a. 3.900/7.200

  • b. 3.9000 / 7.2000

  • c. 3.90/ 7.20

  • d. 3.900/7.2


The plan from here

  • Which of the following operations would yield an answer of 0.5417 to the correct number of significant digits?

  • a. 3.900/7.200

  • b. 3.9000 / 7.2000

  • c. 3.90/ 7.20

  • d. 3.900/7.2


The plan from here

  • The multiplier for SI units with the prefix micro is __________.

  • a. 1/1,000,000,000

  • b. 1/1,000,000,000,000,000

  • c. 1/1,000,000,000,000

  • d. 1/1,000,000


The plan from here

  • The multiplier for SI units with the prefix micro is __________.

  • a. 1/1,000,000,000

  • b. 1/1,000,000,000,000,000

  • c. 1/1,000,000,000,000

  • d. 1/1,000,000


The plan from here

  • In the metric system, 1 g is the same as

  • A)100 mg.

  • B)1000 mg.

  • C)1000 kg.

  • D)100 kg.


The plan from here

  • In the metric system, 1 g is the same as

  • A)100 mg.

  • B)1000 mg.

  • C)1000 kg.

  • D)100 kg.


The plan from here

  • The masses of two objects are added together. The first mass is 36.46 grams and the mass of the second object is 5.1234567 grams. When the rules for significant figures are used, the total is:

    • A 41.5834567 g

    • B 41 g

    • C 41.58 g

    • D 42 g


The plan from here

  • The masses of two objects are added together. The first mass is 36.46 grams and the mass of the second object is 5.1234567 grams. When the rules for significant figures are used, the total is:

    • A 41.5834567 g

    • B 41 g

    • C 41.58 g

    • D 42 g


The plan from here

  • The vertical distance from the basement to the roof would best measured in

  • A) Meters

  • B) Kilometers

  • C) Nanometers

  • D) Centimeters


The plan from here

  • The vertical distance from the basement to the roof would best measured in

  • A) Meters

  • B) Kilometers

  • C) Nanometers

  • D) Centimeters


The plan from here

  • The metric prefix “milli” is equal to how many basic units?

    • A 1000

    • B 100

    • C 0.1

    • D 0.001


The plan from here

  • The metric prefix “milli” is equal to how many basic units?

    • A 1000

    • B 100

    • C 0.1

    • D 0.001


The plan from here

  • Your weight would be best measured in:

  • A) Grams

  • B) Milligrams

  • C) Kilograms

  • D) Centigrams


The plan from here

  • Your weight would be best measured in:

  • A) Grams

  • B) Milligrams

  • C) Kilograms

  • D) Centigrams


The plan from here

  • Convert 57.7 kg to grams.

  • a. 5,770 g

  • b. 57,700g

  • c. 577,000 g

  • d. 5,770,000 g


The plan from here

  • Convert 57.7 kg to grams.

  • a. 5,770 g

  • b. 57,700g

  • c. 577,000 g

  • d. 5,770,000 g


The plan from here

  • When converting from kilograms to a grams, one must:

    • Move the decimal point to the left or divide

    • Move the decimal point to the right or divide

    • Move the decimal point to the left or multiply

    • Move the decimal point to the right or multiply


The plan from here

  • When converting from kilograms to a grams, one must:

    • Move the decimal point to the left or divide

    • Move the decimal point to the right or divide

    • Move the decimal point to the left or multiply

    • Move the decimal point to the right or multiply


The plan from here

  • An inch would be about equal to which of the following?

  • .25 kilometers

  • .25 meters

  • .025 meters

  • 2.5 milliliters


The plan from here

  • An inch would be about equal to which of the following?

  • .25 kilometers

  • .25 meters

  • .025 meters

  • 2.5 milliliters


The plan from here

  • Which of the following is the metric equivalent to 0.001 liter (L)?

  • A)1 kiloliter (kL)

  • B)1 deciliter (dL)

  • C)1 milliliter (mL)

  • D) 1 centiliter (cL)


The plan from here

  • Which of the following is the metric equivalent to 0.001 liter (L)?

  • A)1 kiloliter (kL)

  • B)1 deciliter (dL)

  • C)1 milliliter (mL)

  • D) 1 centiliter (cL)


The plan from here

  • The metric equivalent to 10 grams is

  • A)100 centigram.

  • B)100 decigram.

  • C)0.001 kilogram.

  • D)1 milligram.


The plan from here

  • The metric equivalent to 10 grams is

  • A)100 centigram.

  • B)100 decigram.

  • C)0.001 kilogram.

  • D)1 milligram.


The plan from here

  • Convert 243 ng to its equivalent in kilograms.

  • a. 2.43×10-10 kg

  • b. 2.43×1012 kg

  • c. 243×1010 kg

  • d. 2.43×1010 kg


The plan from here

  • Convert 243 ng to its equivalent in kilograms.

  • a. 2.43×10-10 kg

  • b. 2.43×1012 kg

  • c. 243×1010 kg

  • d. 2.43×1010 kg


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