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THIS
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Practice
makes
perfect
Up Down All
Around
A newt
on Law and
Order
Making
money
F.S. Matts
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You
Nit
Wit
Practice
makes
Perfect
Up Down All
Around
A Newt on
Law and
Order
Making
Money
F.S. Matts
100
100
100
100
100
100
200
200
200
200
200
200
300
300
300
300
300
300
400
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500
You
Nit
Wit
What are the base units of
Power?
A 100
kgm2s-3
A 100
What do a vector and a scalar
have in common?
What do they not have in
common?
A 200
Both measure magnitude
Only vectors show a direction
A 200
How do you calculate the stiffness of
a spring and what are its units?
A 300
Hooke’s Law
Nm-1
A 300
Give three different ways the
unit for energy could be
represented.
A 400
J
Nm
kgm2s-2
A 400
Data is collected and a graph is plotted of
Force vs Acceleration.
What piece of information could you
gather from this graph, and how would
you do it?
A 500
Plot Force vs Acceleration.
Take the gradient
Gives you the mass
A 500
Pablo and Edu decide to build a water
balloon launcher with long range projectile
in mind so that they may attack the Year 13
students without being seen. They want to
use the stiffest spring possible, and they
have three available. They collect data and
plot a graph. The graph should be
_________ vs. __________ and the
_________ will show the stiffness.
B 100
Force vs. Extension
Gradient
B 100
Celia, arm wrestling champion of the class,
one by one beats every boy from Year 12.
The boys then decide to rank themselves
on who was best by how long they were
able to survive before being conquered.
When correctly collecting the data should
the times be recorded to the same precision
for each time, or to the same number of
significant figures?
B 200
Same Precision.
B 200
Miguel LOVES to write equations. Sometimes
he doesn’t even add numbers he just starts
listing beautiful mathematical equations and
playing with the variables! Suppose he decides
to play around with the idea of fluids. List all the
equations that he would write related to a
spherical cow falling through a fluid.
B 300
Newtons Second Law
Upthrust
Weight
Viscosity
Volume of a Sphere
B 300
Name two methods scientists
have used to study climate of
the past
B 400
Tree rings
Ice cores
Sediments
B 400
The Year 10 students have recently learned
about Hooke’s Law and so Niko’s little
brother decides to help him study for the
physics exam tomorrow. Niko tells Andrés
that he can look at a Length (cm) vs Force
(N) graph, calculate the area under the
curve and it will give him the energy stored
in the spring and the gradient is the
stiffness. Unfortunately, Andrés needs to
help Niko understand a little better. List
three things Andrés corrects Niko on?
B 500
The area under the curve would need to be
with an extension graph. (or subtract the lower
rectangle)
The graph needs to be a force vs extension
(flip the axes).
The extension needs to be measured in meters
B 500
Gabriel and Diego, always getting
themselves into trouble, start launching
water balloons from the top court down
onto the lower basketball court where the
year 10’s are playing. One balloon is
launched with a horizontal component of
10ms-1 and a vertical component of 15ms1. What is the velocity of the balloon?
C 100
18.03ms-1
56.3 degrees to the horizontal.
C 100
The cart of mass 10 kg shown above moves without frictional
loss on a level table. A 10 N force pulls on the cart
horizontally to the right. At the same time, a 30 N force at an
angle of 60° above the horizontal pulls on the cart to the left.
What is the magnitude of the horizontal acceleration of the
cart?
(A)
0.5 m/s2
(B)
1.6 m/s2
(D)
2.5 m/s2
(E)
2.6 m/s2
(C)
2.0 m/s2
C 200
A) 0.5ms-2
C 200
Miguel and Carol decide to take a
roadtrip to Santiago (walking is
overrated). They find a nice stretch of
road and decide to see how good the
car is. The slow to a stop, then floor
the pedal. They travel 1km in 60
seconds. What was their
acceleration?
C 300
a equals 0.56ms-2
C 300
DAILY
Place A Wager
DOUBLE
C 400
Meanwhile Carlota and Celia decide to
learn how to drive a speedboat. They
are on a river that is 2km wide and has
a current of 5ms-1. They accelerate at
a rate of 10ms-2 across the river, from
one bank to the other. Draw the path of
the boat. Find how far horizontally they
travelled downriver.
C 400
3.16m
C 400
What is the answer to life, the
universe and everything?
C 500
42
C 500
Today Julius is grounded. His sister got
angry with him and hit him. Since she
also has Ms. Wiens for physics, after
hitting him she instantly ran off and told
her mom that Julius hit her. She knows
better than to lie, but she used physics to
get Julius in trouble. Explain why Julius
hit her.
D 100
Newtons 3rd Law
D 100
Emma and Cesar celebrate the end of the
term by going sledding in Gredos. Cesar
insists that Emma pushes her up the hill
(which has a grade of 30 degrees). They
are going up at a constant velocity. Draw a
Free Body Diagram. Write the Newtons
Laws equations needed to solve this
equation, with the forces substituted in.
D 200
Forces: Weight (down)
Friction (parallel to slope, downhill)
Force (Emma) (Parallel to slope,
uphill)
Normal perpendicular to surface.
D 200
Ms. Wiens was the brunt of several pranks in high
school. Between getting thrown in trash cans and
having her car covered in vaseline and bird seed,
she often found her stuff being hung just out of
reach. One day she found her beloved red
backpack hanging from two ropes between two
trees. The first rope had a tension of 100N and
was at an angle of 30 degrees to the vertical. The
second rope had a tension of 70N and was at an
angle of 45 degrees to the vertical. What was the
mass of her backpack?
D 300
Approximately 14kg.
D 300
Antonio comes in one day in a rage,
claiming that Newton is a fraud. He
claims to have three laws, but really he
only has two. After listening to his
logic, Ms. Wiens happens to agree.
What made her change her mind about
her second favourite physicist?
D 400
(N1:) No acceleration /
constant velocity (‘constant speed’ not sufficient)/
(at rest or) uniform motion in straight line (1)
unless unbalanced/net/resultant force (1)
[Converse: If ΣF = 0 / forces in equilibrium (‘body in equilibrium’,
‘equal forces’ not sufficient) 1 mark, there is no acceleration
(‘remains at rest’ not sufficient)1 mark]
(N2:) acceleration proportional to force / F = ma (1)
Qualify by stating resultant/net force / ΣF = ma (1)
(Reference to ‘resultant’ for N2 may be credited elsewhere in the
answer as they don’t always put it with F = ma, but it must be clearly
linked to N2.)
(‘External force’ not sufficient)
D 400
A sled weighs 100 N. It is held in
place on a frictionless 20° slope
by a rope attached to a stake at
the top; the rope is parallel to the
slope. Find the tension in the rope.
D 500
A sled weighs 100 N. It is held in
place on a frictionless 20° slope
by a rope attached to a stake at
the top; the rope is parallel to the
slope. Find the tension in the rope.
34 N
D 500
When is energy conserved?
E 100
Always
E 100
Borja the bully throws a young
unsuspecting Panda Bear off a cliff. He
calculates the speed at which the
panda goes splat by using knowledge
that gravity is doing work on the panda
to convert gpe to ke. What assumption
did he make?
E 200
That only mechanical forces
were acting on the panda.
(Spring, Gravity,
Electrostatic)
E 200
Juan and Laura decide to hike to the top of Yelmo.
Laura, overly eager, decides to not take the trail and just
walks straight up, claiming it will save her from having to
walk so far and do so much work. Juan, enjoying the trail
takes the leisurly path, claming that he wants to do less
work by not climbing as steep. They both reach the top
claiming to be less tired than the other for having done
less work. Assuming they have approximately the same
mass, who did more work? Justify your answer.
E 300
The same. They both have the same amount of potential
energy transferred into them, therefore they both did the
same amount of work.
E 300
David, Paco and Adán decide to invent a new sport…
skydiving football. The one rule is that you are not
allowed to open up your parachute for the first 500
meters. David, feeling especially ENERGETIC decides
to calculate how fast they are going when they open
their parachutes. Adán, also feeling strong and
eMOTIONal, decides to calculate his value as well. Paco
is the judge. Adán and David get into a fight over the
method to be used. Paco said they are both correct and
incorrect. Their methods were correct, but they were
both making assumptions. What were the two methods
used (including equations!), and the assumptions for
each.
E 400
E 400
E 500
E 500
Ms. Wiens and David often
fight about what to memorize
when it comes to work.
Really, both are correct. What
two things should you
remember??
F 100
Work equals Force x Distance
Transfer of Energy!
F 100
What condition must be true for a
sphere to fall through a fluid at terminal
velocity?
F 200
Equilibrium of Forces, W =
U+D
F 200
What causes turbulent flow in a tube,
and how can you minimize it?
F 300
Friction from the surface,
Slower velocity of fluid.
F 300
A class of students are measuring the
viscosity of fluids by timing how long it takes
for a marble to fall through the fluid. Several
hours later a different class completes the
same lab (same equipment) and finds that
the results have changed. Why and how
have the results changed? (comment on
how the velocity and viscosity have
changed.
F 400
The velocity if faster,
The viscosity is lower
The temperature is higher
F 400
A ball is falling through a fluid. This
is all you know. Write a complete
Newtons Second Law equation to
represent the situation. (First the law,
then the forces, then the variables. 3
lines please).
F 500
F 500
The Final Jeopardy Category is:
Uselessness.
Click on screen to begin
Why are Panda’s not worth
time and effort to save?
Click on screen to continue
Difference in building structure,
time of day, population density,
type of rock, etc.
Click on screen to continue
Thank You for Playing Jeopardy!