Transcript fall bobsled

You outta
be in
pictures
Look it up!
Definitions
So, you want
to be a
Newton?
Graphing
Hodgepodge
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What does the drawing
below represent?
Balanced force
Unbalanced force
Net force
Weight
mass
What is weight?
What do the drawings
below represent?
Unbalanced force Weight
Mass
Net force Balanced force
1.
2.
What is:
1. Balanced Force
2. Unbalanced Force
1.
2.
This is always the same no
matter what planet you are on!
What is Mass??
Match the drawings below with these:
a. Rolling friction
b. Gravitational force
c. Sliding friction
d. Static Friction
e. Projectile motion
1.
2
4
3
5
Match the drawings below with these:
#4:a. Rolling friction #5 b. Gravitational force
#3 c. Sliding friction
#2 d. Static Friction #1 e. Projectile motion
1.
2
4
3
5
1.
The sleek shape of a bobsled reduces
this and allows for greater speeds.
A. speed
B. air resistance
C. velocity
D. inertia
2. Josh & his friends love the Terminator roller
coaster because of its two, 360 degree loops.
Nobody falls out when the cars are upsidedown because of
a. acceleration
b. centripetal force
c. inertia
d. gravity
1.
The sleek shape of a bobsled reduces
this and allows for greater speeds.
b) air resistance
2. Josh & his friends love the Terminator roller
coaster because of its two, 360 degree loops.
Nobody falls out when the cars are
upside-down because of
b. centripetal force
What word matches these definitions?
1.What is the push or pull on an object
that can cause it to accelerate called?
2. What is the sum of all forces acting on
an object called?
What word matches these definitions?
1.What is the push or pull on an object
that can cause it to accelerate called?
Force
2. What is the sum of all forces acting
on an object called?
net force
Here’s my Definition:
What’s my Word???
1. an object’s change in position over time
when compared with a reference point
2. a force that opposes motion between
two surfaces that are touching
3. the amount of matter that something is
made of; its value does not change with
the object’s location
What’s my word???
1. an object’s change in position over time
when compared with a reference point
Motion
2. a force that opposes motion between
two surfaces that are touching Friction
3. the amount of matter that something is
made of; its value does not change with
the object’s location Mass
Write the word that matches
these definitions:
1. A push or pull.
2. Speed in a given direction.
3.The rate at which an object moves.
4. The location of an object compared
to a reference point
Write the word that matches
these definitions:
1. A push or pull. FORCE
2. Speed in a given direction.
Velocity
3.The rate at which an object moves.
Acceleration
4. The location of an object
compared to a reference point
Position
Match the Definition to the correct term:
1.The tendency of an object to resist change in
motion.
2. A “perpendicular” force that acts on the
surface of a book resting on a table.
3. The metric unit for force.
4. A measure of the gravitational force on an
object.
5. Mass x Velocity
Your Choices are:
a. Weight
b. Inertia
c. Momentum
d. Newton
e. Normal Force
Match the Definition to the correct term:
1.The tendency of an object to resist change
in motion.
b. Inertia
2. A “perpendicular” force that acts on the
surface of a book resting on a table.
e. Normal Force
3. The metric unit for force. d. Newton
4. A measure of the gravitational force on an
object.
a. Weight
5. Mass x Velocity c. Momentum
Force / Mass = Acceleration
remember: F= m x a
75N/50kg =
2
1.5 m/s
Force / Acceleration = Mass
remember: F= m x a
2
5ms =
75N /
15kg
Remember: F= m x a
Remember: F= m x a
a= F / m answer: 2 m/s2
1. The action force is equal to the reaction force
according to which of Newton’s Laws?
a.1st law
b. 2nd law
c. 3rd Law
2. The idea that all objects fall at the same rate if air
resistance is neglected was stated by
a.Dalton b. Galileo c. Newton d. Aristotle
3. Newton generalized his observations on gravity in
a law known as the law of : ______ (fill in the blank)
4. a force of attraction between objects that is due to
their masses is called: : _______ (fill in the blank)
1. The action force is equal to the reaction force
according to which of Newton’s Laws? c. 3rd Law
2. The idea that all objects fall at the same rate if air
resistance is neglected was stated by b. Galileo
3. Newton generalized his observations on gravity
in a law known as the:
Law of Universal Gravitation
4. A force of attraction between objects that is due
to their masses is : Gravity
Which Newton’s Law is it?? Law 1, Law 2 or Law 3
1. A swimmer pushes water back with her arms,
but her body moves forward.
2. An object at rest remains at rest, and an object
in motion remains in motion at a constant
velocity, unless an unbalanced force acts on it.
3. For every action, there is an equal & opposite
reaction.
4. A pitched baseball goes faster than one that is
gently thrown.
5. In a balloon rocket, the air from the balloon
pushes on the air & the air pushes the rocket up.
Which Newton’s Law is it?? Law 1, Law 2 or Law 3
1. A swimmer pushes water back with her arms,
but her body moves forward. Law 3
2. An object at rest remains at rest, and an object in
motion remains in motion at a constant velocity, unless
an unbalanced force acts on it. Law 1
3. For every action, there is an equal & opposite
reaction. Law 3
4. A pitched baseball goes faster than one that is gently
thrown. Law 2
5. In a balloon rocket, the air from the balloon pushes
on the air & the air pushes the rocket up. Law 3
Draw a position-time graph
and label the axis
Draw a speed-time graph
and label the axis
1.During which time interval was travel FIRST
in a positive direction?
2. During which SECOND time interval,
did travel go in a positive direction?
3. During which time interval did it first travel
in a NEGATIVE direction?
1.During which time interval was travel FIRST
in a positive direction? 0-10 seconds
2. During which SECOND time interval
was travel in a positive direction? 40-55 sec
3. During which time interval did it first travel
in a NEGATIVE direction? 15-40 seconds
Identify the type of acceleration
shown in these graphs:
Identify the type of acceleration
shown in these graphs:
Determine which line answers the question
At rest:
Traveling Slowly:
Traveling Quickly in a negative direction:
Traveling fast in a positive direction :
Determine which line answers the question
At rest: C
Traveling Slowly: D
Traveling Quickly in a negative direction: A
Traveling fast in a positive direction : B
1.Which runner won the race?
2. Which runner stopped for a rest?
3. How long did he stop for?
4. How long did Bob take to complete the track?
5. Calculate Albert’s average speed.
1.Which runner won the race? Albert
2. Which runner stopped for a rest? Charlie
3. How long did he stop for? 5 seconds
4. How long did Bob take to complete the track? 14 seconds
5. Calculate Albert’s average speed. 100/12 (D/T) 8.33mps
SHOW THE FORMULAS FOR:
SPEED
DISTANCE
SPEED= DISTANCE/TIME
S= D/T
DISTANCE = SPEED X TIME
D= S x T
WHICH TYPE OF FRICTION IS THIS???
1.a skydiver who slows due to the
parachute opening
2. a wheeled cart being pushed
3.a crate resting on a loading ramp
4. a hockey puck crossing an ice rink
WHICH TYPE OF FRICTION IS THIS???
1.a skydiver who slows due to the parachute
opening : FLUID
2. a wheeled cart being pushed: ROLLING
3.a crate resting on a loading ramp: STATIC
4. a hockey puck crossing an ice rink: SLIDING
SPEED, DISTANCE & TIME PROBLEMS:
1. Mrs G travels in her mini 200 km in
4 hrs. What speed did she travel at?
2. Driving a distance of 260 miles at a
speed of 65mph will take how long?
3. Mr Power rode his bike at a speed of
18km/h for 2 hours. How far did he travel?
SPEED, DISTANCE & TIME PROBLEMS:
1.Mrs G travels in her mini 200 km in 4 hrs. What
speed did she travel at? D/T=S 200/4= 40km/hr
2. Driving a distance of 260 miles at a speed of
65mph will take how long? D/S=T 260/65= 4 hr
3. Mr Power rode his bike at a speed of 18km/h for
2 hours. How far did he travel? S x T=D 36km
MASS OR WEIGHT? YOU DECIDE:
1. The same on the moon
2. Measure of the gravitational force
3. Different on the moon
4. Measured in Newtons
5. Measured with a balance
6. Measured on a scale
MASS OR WEIGHT?
YOU DECIDE:
1. The same on the moon : Mass
2. Measure of the gravitational force: Weight
3. Different on the moon : Weight
4. Measured in Newtons : Weight
5. Measured with a balance: Mass
6. Measured on a scale : Weight
What is the
net force for
these
problems?
Number
your paper
1-10
1. 4
2. 5
3. Balanced
4. 9 
5. 4 
6. 1 
7. 6 
8. 1 
9. 3 
10. 1