SPEED, DISTANCE, & TIME PRACTICE TOC FOR 11/2 Warm Up On Left hand side, under date 1. Pick a...
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SPEED, DISTANCE, & TIME PRACTICE TOC FOR 11/2
SPEED, DISTANCE, & TIME PRACTICE TOC FOR 11/2 Warm Up On Left hand side, under date 1. Pick a vocabulary word and KISS definition 2. Circle your answer
Warm Up On Left hand side, under date 1. Pick a vocabulary word
and KISS definition 2. Circle your answer and Justify your choice
I.STARTER (write this under the date Nov 1)
Slide 4
II. Practice Add these notes to your Journal.
Slide 5
MOTION An objects change in position relative to a reference
point over a period of time. REFERENCE POINT A place or object that
can be used to determine if an object is in motion.
Slide 6
SPEED The rate at which an object moves. Depends on the
distance traveled and the time taken to travel the distance. D /
T
Slide 7
Slide 8
SPEED EXAMPLE A hockey puck slides along the ice for 3 s before
crossing the goal line 6 m away. What is the average speed of the
puck before it crossed the goal line? S = D / T S = 6 m / 3 s S = 2
m/s
Slide 9
Go over more examples on the board
Slide 10
III. Application Worksheet goes here once graded!
Slide 11
IV. Connection Today your boss informed you that you have a
meeting tomorrow morning at 8:00 am. CoolBUT, its in Waco. WACO!!
Thats 168 miles away. You dont know how long it will take to get
there, but the speed limit is 70 mph. You dont want to get a
ticket, so what time will you have to leave??
Slide 12
Hmmmm Speed = 70mph Distance = 168 mi T = D/T Time = 168/70 =
2.4 hours ** (2.4 is not 2 hours and 40 minutes!!!)*** What time do
I leave?
Slide 13
2.4 is almost 2 hours. .4 = 4/10 Make a proportion! 4/10 = x/60
X = 24 It is actually 2 hours and 24 minutes. I would need to leave
at 5:36!
Slide 14
V. Ending Describe why its important to calculate speed (write
4-5 sentences).
Slide 15
VELOCITY & ACCELERATION TOC FOR 11/9
Slide 16
F ocus Grab your notebook and complete the quiz Turn in once
complete
Slide 17
Notes on Velocity and Acceleration Set up your foldable
Slide 18
VELOCITY Speed (D/T) in a given DIRECTION. Example: 30 mph
heading East
Slide 19
VELOCITY EXAMPLE What would your velocity be if you traveled 1
km east in 0.5 h? V = D T V = 1 km 0.5 h V = 2 km/h East Direction
East
Slide 20
ACCELERATION The rate of change in velocity. Can be speeding
up, slowing down or changing directions
Slide 21
CALCULATING ACCELERATION Acceleration = Final Velocity Initial
Velocity Time
Slide 22
ACCELERATION EXAMPLE Example: Riding your skateboard, it takes
you 12 s to accelerate from 2 m/s to 8 m/s. What is your
acceleration? A = 8 m/s 2 m/s 12 s A = 6 m/s 12 s A = 0.5 m/s
2
Slide 23
Example: Riding your skateboard, it takes you 12 s to
accelerate from 8 m/s to 2 m/s. What is your acceleration? A = 2
m/s 8 m/s 12 s A = - 6 m/s 12 s A = - 0.5 m/s 2 (slowing down)
Slide 24
III. Application Worksheet goes here once graded!
Slide 25
IV. Connection 1. Find the velocity in m/hr of a runner who
runs exactly 100m north in exactly 2 hours. 2. What would his
acceleration be if he started at that velocity, but ended with a
velocity of 75m/hr?
Slide 26
V = D/T D= 100m T= 2 hours V = 100/2 = 50 m/hr north
Acceleration: 75-50 2 25/2 = 12.5 m/s squared
Slide 27
V. Ending Fill in your Speed tab from your notes Compare and
Contrast speed, velocity and acceleration (write 4-5
sentences).
Slide 28
FORCE Push or pull Affects motion: Set the object in motion
Stop its motion Change the speed and direction of its motion FORCES
CAUSE ACCELERATION!
Slide 29
FORCE FACTS Measured in Newtons (N) Act in pairs Act in a
particular direction
Slide 30
Push or Pull? Changing speed, direction or both?
Slide 31
TWO THINGS AFFECTING MOTION How strong the forces are The
direction of the forces
Slide 32
NET FORCE When more than one force acts on an object, the
forces combine to form a net force. Same direction ADD Opposite
directions - SUBTRACT
Slide 33
BALANCED FORCES Opposite in direction & equal in size NO
change in movement 2000 N 2000 N 2000 N = 0 N
Slide 34
UNBALANCED FORCES Not always opposite and not equal in size
Causes movement GRAVITY AIR RESISTANCE 5000 N 1000 N 5000 N 1000 N
= 4000 N
Slide 35
EXAMPLE The forces shown above are PUSHING / PULLING forces.
The forces above are WORKING TOGETHER / OPPOSITE FORCES? The forces
are BALANCED/ UNBALANCED. The forces DO / DO NOT balance. The
stronger force is pulling to the RIGHT / LEFT. The weaker force is
pulling to the RIGHT / LEFT. Motion is to the RIGHT / LEFT. 200
N100 N
Slide 36
TYPES OF FORCES Buoyant Force Magnetic Force Electrical Force
Gravitational Force Elastic Force Centripetal Force Frictional
Force
Slide 37
FRICTION A force opposing (going against) motion Brings an
object to rest
Slide 38
FOUR TYPES OF FRICTION Sliding Friction 2 solid surfaces
sliding over each other *** Opposes motion the most! Rolling
Friction Object rolling over a surface Fluid Friction Object moves
through a fluid (liquid or a gas) Static Friction The force of 2
surfaces in contact but does not cause movement
Slide 39
FOUR TYPES OF FRICTION
Slide 40
NEWTONS 3 LAWS 1 ST LAW When forces are balanced, an object at
rest will stay at rest and an object in motion will stay in motion
at a constant velocity
Slide 41
2 ND LAW Force = Mass x Acceleration
Slide 42
3 RD LAW For every action, there is an equal and opposite
reaction
Slide 43
GRAVITY A force of pull between objects Increases as mass
increases Increase as distance decreases The measure of gravity IS
an objects weight