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The Man’s
Jeopardy
Learning Objectives (Big Ideas)
1. Analyze an object’s motion and be able to
determine distance, instant & average speed, or
acceleration.
2. Describe how the various balanced and
unbalanced forces can have an effect on an
object’s motion.
3. Apply Newton’s Laws to real world examples.
4. Analyze the methods by which machines make
work easier.
5. Examine situations where kinetic energy is
changed into potential energy (and vice-versa).
RULES
1. There will be round robin play and all
questions will be all-play even for the
daily doubles.
2. The teams who answers correctly win the
point value of the question.
3. If a team answers a daily double
incorrectly, then that team will lose the
number of points they bid.
Let’s
4. There is one daily double available.
play
Motion
Forces Work & Energy
Machines
100
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400
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500
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Final Jeopardy
Motion for 100
Which of the following tell you the object’s
velocity: a car going at 60 mph, a truck
speeding at -80 mph, and/or a bike traveling
at 15 mph South?
The truck and the bike examples are
velocities because they give the speed &
direction (negative & South).
Motion for 200
Give an example of when an object has
decelerated.
Running then slowing down to walking
Coming to a stop at a red light.
Biking uphill.
Motion for 300
Describe an object’s motion if all of the forces
acting on the object are balanced & the object is
already in motion? What if the forces are
unbalanced?
Balanced: The object will continue its current
motion.
Unbalanced Forces: The object would change its
motion (such as moving faster or slower or
stopping)
Motion for 400
In terms of reference points, explain how you
could be moving at 60 mph or 0 mph if you
were in a car.
According to the road or a stationary object
on the side of the road, you are moving at 60
mph.
However, if the reference point is the car itself,
then you are not moving at all.
Motion for 500
Determine the object’s average speed over 5
hours from the distance-time graph below.
300 km/5 hours = 60 km/h
Forces for 100
Whenever an object is moving on Earth, there will
always be ________, which resists the object’s
motion in the opposite direction of the net force.
Also, on any planet, there will also be _________
which pulls the object down towards the center of
the planet.
Friction
Gravity
Forces for 200
Which object would have the greater
inertia: a large boulder or a pebble?
Which one would have the greater
momentum if they are going about the
same velocity?
Large boulder for both questions
(more mass means more inertia and more
momentum)
Forces for 300
What are 2 ways that you could cause an
object to collide with another with more
force?
Increase BOTH the object’s mass and
acceleration together.
Forces for 400
If two track & field stars push with the same
amount of force with their legs, which one
would accelerate quicker: the heavier runner
or the lighter runner? Explain why.
Lighter runner because less mass means
a quicker acceleration if the force is
constant.
Forces for 500
Markie & Suzie conduct an experiment to
determine how mass affects how quickly objects
fall. They choose to drop various objects from the
top of a 30 ft. roof. They both believe that heavier
objects will fall faster. What is their hypothesis?
What I the independent variable? What is the
dependent variable? What are 2 constants?
Hyp.- Heavier objects fall faster
Ind. Var.- Mass of the objects
Dep. Var.- Speed of objects when falling, time it
takes to hit the ground, etc.
Constants- Air resistance, same person dropping
the objects, dropped the same way, etc.
Work & Machines for 100
Machines can make work easier by
increasing the force, which means the
__________ force is greater than the
_______ force.
Output force (usually the weight or load) is
greater than the applied or input force.
Work & Machines for 200
A door stopper is an example of a
_________ (a type of simple machine), and
it has a M.A. ________ than 1
Wedge
M.A. greater than 1
Work & Machines for 300
Suppose the input force for an ax splitting wood is
45 N, what would be a possible output force?
Any value greater than 45 N, but probably
around 90 N or more
Work & Machines for 400
For both 1st class (where the fulcrum is closer to
the load) and 2nd class levers, how does the load
weight compare to the applied force?
The load weight is greater than the applied
force because both types of levers increase the
force (by lowering the applied force).
Work & Machines for 500
Explain how a wheel and axle machine works in
terms of the input vs. output force and input vs.
output distance.
The input force over the wheel travels a greater
distance than the larger output force over the
axle.
Energy for 100
Which of the following is an example of kinetic
energy decreasing: a ball rolling down a ramp,
an object in free-fall, or a car going up a
mountain road?
Car going up the mountain road (slowing
down)
Energy for 200
For the swinging of a pendulum, where is the
PE the greatest and where is the KE the
greatest? Draw a labeled diagram to answer
this question.
Energy for 300
If a skier is going down a mountain, how do the
PE and KE change? Explain your answer
PE decreases because the skier is closer to
the ground and the KE increases because the
skier is getting faster.
Gravity
If planets A and B are the same mass but planet
A is twice as close to Earth as planet B, then
which one will Earth have the greatest
attraction for? Also, suppose planet C is the
same distance from Earth as planet A, but is ¼
as heavy. Now which planet would Earth have
the greatest gravitational attraction for?
Planet A for both cases because it is closer than
planet B, but heavier than planet C.