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Final Jeopardy
Forces
Equilibrium
Newton’s
1st
Newton’s
2nd
Newton’s
3rd
10 Point
10 Point
10 Point
10 Point
10 Point
20 Points
20 Points
20 Points
20 Points
20 Points
30 Points
30 Points
30 Points
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40 Points
40 Points
40 Points
40 Points
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50 Points
50 Points
50 Points
50 Points
50 Points
True/False: The normal force is
always equal and opposite to the
force of gravity?
False
A Newton is equal to what
combination of base metric
units?
Kg*m/s^2
For two given surfaces which will be
greater, the coefficient of static
friction or coefficient of kinetic
friction?
Static Friction
A 9 Newton force and a 15 Newton
force act on an object. What are the
maximum and minimum possible net
forces?
Min = 6 N
Max = 24 N
A 7 Newton force pushes North on
an object and a 8 Newton force
pushes East on the same object.
What is the magnitude and
direction of the net force?
Net force = 10.6 N
Angle = 41 degrees North of East
If an object is in equilibrium, what is true
about the motion of that object and the net
force on the object?
Velocity constant
Net force = 0
If you pull on an occupied chair with a
force of 200 Newtons and it doesn’t
move, the force of friction must be 200
N. Then you pull with a force of 300 N
and the chair slides at a constant
speed. The force of friction must be
what?
300 N
A single force acts on an object. The
force has components in the +y and –x
directions. The single force needed to
bring the object into equilibrium would
have components in which directions?
-y and +x directions
A 2 kg book rests on the table. What is
the magnitude and direction of the
normal (support) force on the book?
19.6 Newtons upwards
Victoria drags a chair at constant
speed with a force of 32 Newtons. If
the chair has a mass of 7.40 kg, what is
the coefficient of friction between the
chair and floor?
0.44
Objects in motion: _________
Objects at rest:_____________
Stay in motion
Stay at rest
Objects at rest stay at rest unless
____________?
There is a net force
The force required to keep an
object moving at a constant
speed in free space is _____?
zero
An object on the moon has
_______ weight and ______
mass compared to the same
object on Earth.
Less weight
The Same mass
Newton’s 1st Law is also called the
Law of Inertia. Define inertia and
what determines how much inertia
an object has?
Inertia = resistance to changes in motion
Determined by the amount of Mass
Accelerations are produced by
_______.
Forces
Accelerations is _________ proportional
to force and _________ proportional to
mass.
Directly
Inversely
A 6 kg brick and a 3 kg brick are dropped
in a vacuum. What is the force of gravity
on each brick?
58.9 N
29.4 N
What is the normal force between a chair
and the floor if the chair has a mass of 12
kg and a 600 Newton person is sitting in
the chair??
718 Newtons
What is the horizontal acceleration of a
30 kg wagon that is pulled with a force
of 140 Newtons if the force is directed
at 13 degrees above the horizontal?
4.46 m/s^2
State Newton’s 3rd Law.
For every force, there is an equal and
opposite reaction force.
If Mike punches the wall, what
is the action force and the
reaction force?
Action: Mike punching wall
Reaction: Wall hitting Mike
As a satellite orbits Earth, the
action force is the Earth
pulling down on the satellite.
Identify the reaction to this
force?
Satellite pulling up
on earth
A karate chop of 1900 N breaks a
board. What force does the board
create on the hand during this?
1900 Newtons, opposite
direction
A tractor pulls a sled. How can the
sled move if there is always an equal
and opposite opposing reaction force?
The opposing force acts ON THE
TRACTOR – only one of the forces
acts on the SLED.
Make your wager
Final Answer
#3 63 degrees