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Physics Jeopardy
Free Body
Diagrams
1st law
2nd law
Kinematics
Mix Up
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Final Jeopardy
$100 Free Body Diagrams
Draw a free body diagram of a 10 kg box sitting still
on a table.
What is the net force?
$100 Answer Free Body
Diagrams
FN= 100 N
Fg= 100 N
Fnet= 0 N
$200 Free Body Diagrams
What is the net force acting on a 40 kg box on the
ground that is being pulled from the right with a force
of 70 N and to the left with a force of 20 N.
$200 Answer Free Body
Diagrams
FN= 400 N
Fp= 20 N
Fnet = 50 N right
Fp= 70 N
Fg= 400 N
$300 Free Body Diagrams
What is the net force on a 18 kg cat if it is falling out of
a tree?
$300 Answer Free Body
Diagrams
180 N
(This is a very fat
cat)
$400 Free Body Diagrams
What is the net force on a 10 kg box if it is being
dragged to the left with a force of 30 N and there
is a 12 N frictional force?
$400 Answer Free Body
Diagrams
FN= 100 N
Ff= 30 N
Fp= 12 N
Fnet = - 18 N
Fg= 100 N
$500 Free Body Diagrams
What is the acceleration on a 15 kg box that is being
pushed to the right with a 20 N force and there is a 5 N
frictional force?
$500 Answer Free Body
Diagrams
FN= 150 N
Ff= 5 N
Fp= 20 N
Fnet = 15 N
Therefore,
acceleration = 1 m/s2
Fg= 150 N
$100 Question
st
1
law
By increasing the mass of an object, you
_________ its inertia.
$100 Answer
Increase
st
1
law
$200 Question
st
1
law
The law of inertia states that an object_________.
a) At rest will remain at rest unless acted on by an outside force.
b) Will continue moving at the same velocity unless an outside
force acts on it.
c) Will continue moving in a straight line unless an outside force
acts on it.
d) That is not moving will never move unless a force acts on it.
e) All of the above
f) None of the above
$200 Answer
st
1
law
e) All of the above
$300 Question
st
1
law
Inertia is a property of matter that
________.
$300 Answer
st
1
law
Opposes a change in motion
$400 Question
st
1
law
Which has a bigger inertia? An elephant slowly on a skateboard,
or a monkey riding on a supersonic rocket?
$400 Answer
The elephant
st
1
law
$500 Question
st
1
law
On the surface of Jupiter, the
acceleration due to gravity is about 3
times that of Earth. What would be
the mass of a 120 kg rock on Jupiter?
$500 Answer
m = 120 kg
st
1
law
$100 Question
nd
2
law
What is the force applied to a car that
has a mass of 1500 kg and accelerates at
a rate of 4 m/s2?
$100 Answer
nd
2
F = 6000 N
law
$200 Question
nd
2
law
What is the acceleration of a ball
falling out of a tree if it weighs
50N and has a mass of 5 kg?
$200 Answer
a = 10 m/s2
nd
2
law
$300 Question
nd
2
law
You push with 20 N on a 10 kg
block on a frictionless surface.
How fast will the block
accelerate?
$300 Answer
a = 2 m/s2
nd
2
law
$400 Question
nd
2
law
In order for an object to be accelerating, what must be
present?
$400 Answer
A net force
nd
2
law
$500 Question
nd
2
law
You push with 60 N on a 10 kg
block and there is a 20 N force
of friction. How fast will the
block accelerate?
$500 Answer
nd
2
a = 4.0 m/s^2
law
$100 Question Kinematics
How fast is a car accelerating if it starts from rest and in
4 seconds ends up at 20 m/s?
$100 Answer Kinematics
a = 5 m/s2
$200 Question Kinematics
What is the acceleration of a boy on a bike if he starts out at
3m/s and in 6 seconds ends up at 9 m/s?
$200 Answer Kinematics
a = 1 m/s2
$300 Question Kinematics
What is the final velocity of a ball rolling down a
hill if when you release it from you hand you roll
it at 2 m/s, and it rolls down the hill in 7 seconds
with an acceleration of 1.5 m/s2?
$300 Answer Kinematics
vf = 12.5 m/s
$400 Question Kinematics
How far will a car travel if it accelerates from
rest at a rate of 6 m/s2 for 3 seconds?
$400 Answer Kinematics
d = 27 m
$500 Question Kinematics
How long will a ball thrown vertically upward take
to reach the top of its path if is thrown with a
velocity of 16 m/s?
$500 Answer Kinematics
t = 1.6 seconds
$100 Question Mix Up
What is the net force on an object if it is
moving at a constant velocity?
$100 Answer Mix Up
Fnet = 0 N
$200 Question Mix Up
How fast will a ball be falling if you throw it
downward at a velocity of 8 m/s and it falls
for 4 seconds?
$200 Answer Mix Up
v = -48 m/s
$300 Question Mix Up
What units make up the unit Newtons (N)?
$300 Answer Mix Up
Kg x m/s2
$400 Question Mix Up
Suppose a particle is accelerated through space by a constant
10 N force. Suddenly the particle encounters a second
force of 10 N in a direction opposite to that of the first
force. The particle _________.
a) Is brought to a rapid halt
b) Gradually decelerates to a halt
c) Continues at the speed it had when it encountered the
second force
d) Theoretically accelerates to speeds approaching the speed
of light
e) None of the above
$400 Answer Mix Up
c) Continues at the speed it had
when it encountered the second
force.
$500 Question Mix Up
If you apply a forward force to a 1000 kg car of
600 N and there is a frictional force of 70 N,
what ist he car’s acceleration?
$500 Answer Mix Up
a = .53 m/s2
Final Jeopardy
What is the term used to describe objects in
motion that only are being affected by
gravity?
Final Jeopardy Answer
Freefall