Transcript What is the displacement and the distance of the cross

You can't get mad at weather because weather's not
about you. Apply that lesson to most other aspects of
life.
Douglas Coupland
What is the displacement and the distance of
the cross-country team if they begin at the
school, run 10 miles and finish back at the
school?
What is the displacement and the distance of
the cross-country team if they begin at the
school, run 10 miles and finish back at the
school?
Distance = 10 miles
Displacement = 0 miles
Use the diagram to determine the average
speed and the average velocity of the skier
during these three minutes.
Use the diagram to determine the average
speed and the average velocity of the skier
during these three minutes.
Distance = 420 m speed = 140 m/min
Displacement = 140 m velocity = 46.7 m/min
Determine the accelerations that result
when a 12-N net force is applied to a 3kg object and then to a 6-kg object.
Determine the accelerations that result
when a 12-N net force is applied to a 3kg object and then to a 6-kg object.
F = m x a
a = F/m
For a 3 kg object
a = 12/3 = 4 m/s2
For a 6 kg object
a = 12/6 = 2 m/s2
WHAT IS THE DIFFERENCE BETWEEN
SPEED AND VELOCITY?
WHAT IS THE DIFFERENCE BETWEEN
SPEED AND VELOCITY?
VELOCITY IS SPEED PLUS DIRECTION.
WHAT IS THE DIFFERENCE BETWEEN MASS
AND WEIGHT?
WHAT IS THE DIFFERENCE BETWEEN MASS
AND WEIGHT?
MASS IS A MEASURE OF HOW MUCH
MATTER AN OBJECT CONTAINS.
WEIGHT IS THE FORCE DUE TO GRAVITY ON
AN OBJECT.
A net force of 15 N is exerted on an
encyclopedia to cause it to accelerate at a
rate of 5 m/s2. Determine the mass of
the encyclopedia.
A net force of 15 N is exerted on an
encyclopedia to cause it to accelerate at a
rate of 5 m/s2. Determine the mass of
the encyclopedia.
F = m x a
So
m = F/a
m = 15/5 = 3 kg
A
B
C
1)
2)
3)
4)
5)
WHAT
WHAT
WHAT
WHAT
WHAT
HAPPENS IN A?
6) WHAT IS THE
HAPPENS IN B?
SPEED IN C?
HAPPENS IN C?
IS THE SPEED IN A?
IS THE SPEED IN B?
A
B
C
1)
2)
3)
4)
5)
6)
IN A, SPEED IS POSITIVE AND CONSTANT
IN B, THE OBJECT IS STOPPED
IN C, SPEED IS NEGATIVE AND CONSTANT
THE SPEED IN A IS 0.8 m/s
THE SPEED IN B IS 0 m/s
THE SPEED IN C IS -0.6 m/s
WHAT IS THE DIFFERENCE BETWEEN AN
ELEMENT AND A COMPOUND?
WHAT IS THE DIFFERENCE BETWEEN AN
ELEMENT AND A COMPOUND?
AN ELEMENT CONTAINS ONLY ONE KIND
OF ATOM.
A COMPOUND IS COMPOSED OF PARTICLES
(MOLECULES) MADE UP OF TWO OR MORE
DIFFERENT KINDS OF ATOMS.
WHAT IS PHYSICAL SCIENCE?
WHAT IS PHYSICAL SCIENCE?
THE STUDY OF CHEMISTRY AND PHYSICS.
WHAT IS THE DIFFERENCE BETWEEN A
MIXTURE AND A PURE SUBSTANCE?
WHAT IS THE DIFFERENCE BETWEEN A
MIXTURE AND A PURE SUBSTANCE?
THE COMPOSITION OF A PURE SUBSTANCE
IS FIXED, WHILE THE COMPOSITION OF A
MIXTURE CAN BE VARIABLE.
CLASSIFY THE FOLLOWING AS
HOMOGENEOUS MIXTURES OR
HETEROGENEOUS MIXTURES:
1)
2)
3)
4)
5)
AIR
OATMEAL COOKIES
PEPSI
18 KARAT GOLD RING
DIRT
CLASSIFY THE FOLLOWING AS
HOMOGENEOUS MIXTURES OR
HETEROGENEOUS MIXTURES:
1)
2)
3)
4)
5)
AIR - HOMOGENEOUS
OATMEAL COOKIES - HETEROGENEOUS
PEPSI - HOMOGENEOUS
18 KARAT GOLD RING - HOMOGENEOUS
DIRT - HETEROGENEOUS
CLASSIFY THE FOLLOWING AS ELEMENTS
OR COMPOUNDS:
1)
2)
3)
4)
5)
HELIUM
WATER
METHANE GAS
LEAD
TABLE SALT
CLASSIFY THE FOLLOWING AS ELEMENTS
OR COMPOUNDS:
1)
2)
3)
4)
5)
HELIUM - ELEMENT
WATER - COMPOUND
METHANE GAS - COMPOUND
LEAD - ELEMENT
TABLE SALT - COMPOUND
WHAT IS HAPPENING IN THE GRAPH
BELOW?
WHAT IS HAPPENING IN THE GRAPH
BELOW?
SPEED IS POSITIVE, AND IT IS
INCREASING.
1) WHAT IS HAPPENING IN A?
2) WHAT IS HAPPENING IN B?
3) WHAT IS HAPPENING IN C?
1) ACCELERATION IS POSITIVE
2) ACCELERATION IS ZERO
3) ACCELERATION IS POSITIVE AND GREATER
THAN A
WHAT HAPPENS IN EACH CASE?
WHAT HAPPENS IN EACH CASE?
1) IN A, ACCELERATION IS NEGATIVE
2) IN B, ACCELERATION IS POSITIVE
3) IN C, THERE IS NO ACCELERATION
4) IN D, ACCELERATION IS POSITIVE, BUT
LESS THAN IN B
A 50 kg OBJECT IS IN FREE FALL. WHAT
IS THE ACCELERATION OF THE OBJECT.
A 50 kg OBJECT IS IN FREE FALL. WHAT
IS THE ACCELERATION OF THE OBJECT.
IN FREE FALL, THERE IS NO AIR
RESISTANCE, SO THE ACCELERATION IS
9.8 m/s2
THE DENSITY OF MERCURY IS 13.5 g/ml.
WHAT VOLUME WOULD YOU NEED TO HAVE
50 GRAMS?
THE DENSITY OF MERCURY IS 13.5 g/ml.
WHAT VOLUME WOULD YOU NEED TO HAVE
50 GRAMS?
Density = mass/volume
Volume = mass/density = 50 / 13.5
Volume = 3.7 ml
Convert the following to scientific notation:
1) 356700
2) 0.00098
3) - 533,000
4) 0.0721
Convert the following to scientific notation:
1) 356700 = 3.567 x 105
2) 0.00098 = 9.8 x 10-4
3) - 533,000 = - 5.33 x 105
4) 0.0721 = 7.21 x 10-2
CONVERT THE FOLLOWING TO REGULAR
NUMBERS:
1) 3.82 X 10-4
2) 6.44 X 102
3) 8.3 X 10-7
4) 5.88 X 105
CONVERT THE FOLLOWING TO REGULAR
NUMBERS:
1) 3.82 X 10-4 = 0.000382
2) 6.44 X 102 = 644
3) 8.3 X 10-7 = 0.00000083
4) 5.88 X 105 = 588,000
CONVERT THE FOLLOWING TO METERS:
1) 15 cm
2) 1500 mm
3) 1.6 km
CONVERT THE FOLLOWING TO METERS:
1) 15 cm = 0.15 m
2) 1500 mm = 1.5 m
3) 1.6 km = 1600 m
WHAT IS THE FIRST THING YOU DO
BEFORE YOU BEGIN A LAB?
WHAT IS THE FIRST THING YOU DO
BEFORE YOU BEGIN A LAB?
READ THE INSTRUCTIONS.
WHAT IS THE DIFFERENCE BETWEEN A
HYPOTHESIS AND A THEORY?
WHAT IS THE DIFFERENCE BETWEEN A
HYPOTHESIS AND A THEORY?
A HYPOTHESIS IS AN EDUCATED GUESS,
WHILE A THEORY IS A PROVEN
HYPOTHESIS.
WHAT IS MATTER?
WHAT IS MATTER?
ANYTHING THAT HAS MASS AND TAKES
UP SPACE.
YOU MATTER!!