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WorksheetsSem. 1 Study Guide, Part 2, 20-21 gk
Total questions: 64
Worksheet time: 32mins
Name
Class
Date
1.
The cause of acceleration.
a)
an unbalanced force or a net force
b)
weight
c)
mass
2.
In every action-reaction force pair the forces are equal in _______.
a)
magnitude (size or amount)
b)
direction
c)
distance
3.
In every action-reaction force pair, the direction of the forces is
a)
opposite
b)
toward each other
c)
away from each other
4.
The action-reaction law is which of Newton's laws of motion?
a)
3rd
b)
1st
c)
2nd
5.
Newton's 2nd Law of Motion equation
a)
F = ma or a = F/m
b)
p = mv
c)
J = Ft
6.
Zero net force means the forces are
a)
balanced
b)
parallel
c)
perpendicular
7.
SI unit of force
a)
newton, N
b)
joule, J
c)
watt, W
8.
weight is calculated by
a)
mass x the force of gravity or the acceleration due to gravity
b)
mass x velocity
c)
mass divided by force
9.
One can see from F = ma that a newton is equal to a
a)
kg*m/s^2 (kilogram meter per second squared)
b)
kgm/s
c)
m/s squared
10.
In physics, weight is measured in newtons because it is a
a)
force
b)
distance
c)
displacement
11.
inertia is determined by the amount of
a)
mass
b)
mass and velocity
c)
force and mass
12.
momentum is determined by
a)
mass and velocity
b)
mass only
c)
mass and force
13.
Earth's acceleration rate due to gravity
a)
9.8 m/s^2
b)
6.67 x 10 to the -11 N-m squared per kg squared
c)
9.8 m/s
14.
The force of the moon pulling on the earth is ________ the earth's force on the moon.
a)
equal to
b)
less than
c)
more than
15.
Forces always occur this many at a time
a)
2 (in pairs)
b)
1
c)
4
16.
sum/total amount of all forces acting on an object
a)
net force
b)
normal force
c)
friction
17.
People often call Newton's 1st Law of Motion the law of
a)
Inertia
b)
action-reaction
c)
acceleration
18.
any push or pull is a
a)
force
b)
weight
c)
normal force
19.
resistance to any change in motion is
a)
inertia
b)
momentum
c)
conservation of momentum
20.
Inertia is the resistance to any
a)
change in motion
b)
force
c)
distance
21.
All objects with mass have a force of
a)
gravity (gravitational attraction)
b)
friction
c)
normal
22.
force that always opposes motion
a)
friction
b)
gravity
c)
normal
23.
what happens to the amount of gravity between 2 objects as they move further apart
a)
decreases
b)
increases
c)
multiplied
24.
All masses attract all other masses. This is Newton's ______________ Law of __________
a)
Universal Law of Gravitation
b)
3rd Law of Motion
c)
Law of Convervation of Momentum
25.
support force perpendicular to the support surface
a)
normal force
b)
tension
c)
gravity
26.
tendency to continue with the same motion at the same speed in the same direction (same velocity) is which law
a)
Newton's 1st Law of Motion
b)
Newton's 2nd Law of Motion
27.
an increase in mass of either or both masses would cause the force of gravitational attraction between them to
a)
increase
b)
decrease
28.
Constant velocity indicates forces that are
a)
balanced
b)
unbalanced
c)
less than 1
29.
Law of Conservation of Momentum
a)
the TOTAL momentum of objects colliding is equal before and after a collision
b)
momentum of the first object compared to the momentum of the second object
30.
The total momentum of both objects before a collision is equal to the total momentum of both objects after a collision is this law
a)
Law of Conservation of Momentum
b)
Universal Law of Gravitation
31.
Formula for momentum
a)
momentum = mass x velocity
b)
force x time
32.
impulse formula
a)
J = Ft
b)
F = ma
c)
D = m/v
33.
Impulse is multiplying the amount of force by the
a)
time it is applied
b)
m delta v
c)
p = mv
34.
impulse is always equal to the amount of change in
a)
momentum
b)
mass
c)
velocity
35.
The formula, m delta v, is the formula for
a)
change in momentum
b)
acceleration
36.
when objects collide and bounce off of each other (do not stick together)
a)
elastic collision
b)
acceleration
c)
force
37.
The difference in elastic and inelastic collisions is whether _________ is lost or not.
a)
KE (kinetic energy)
b)
partially elastic
c)
perfectly inelastic
38.
Masses collide and stick together in a collision call
a)
perfectly inelastic
b)
PE (potential energy)
c)
Elastic Force
39.
The factors involved in momentum
a)
mass and velocity
b)
partially elastic
c)
elastic
40.
unit for momentum (think of the equation, mv)
a)
kg*m/s (kilogram meter per second)
b)
mass and acceleration
c)
mass and force
41.
The longer a force is applied, the greater the change in
a)
momentum
b)
newton
c)
newton-seconds
42.
Safety devices that collapse upon impact are designed to increase the time of impact to lower the ________ on the object like a car.
a)
force
b)
distance
c)
direction
43.
Applying a force over a greater amount of time (greater impulse) in a follow through on a kick or throw or swing , etc. is intended to increase momentum by increasing the
a)
velocity
b)
time
c)
acceleration
44.
quantity with magnitude and direction
a)
vector
b)
mass
c)
distance
45.
mv = mv is the equation/formula for conservation of momentum, true or false
a)
false; mv + mv = mv + mv is the equation
b)
scalar
46.
type of collision where kinetic energy is NOT lost
a)
elastic
b)
tension
c)
inelastic
47.
in a = F/m, acceleration is _______________ to Force
a)
directly proportional
b)
inversely proportional
c)
inelastic
48.
in a = F/m, acceleration is ______________ to the mass
a)
inversely proportional
b)
directly proportional
49.
all orbiting bodies are constantly ______________ because of not traveling in straight paths.
a)
accelerating
b)
speeding up
50.
formula for acceleration (not from Newton's 2nd Law)
a)
a = final velocity minus initial velocity divided by time
b)
initial velocity - final velocity divided by time
c)
going a greater distance
51.
Objects will continue what they are doing at the same speed (even sitting still) in the same straight direction when they are under balanced forces. This is which law?
a)
Newton's first law of motion
b)
Newton's Law of Conservation of Motion
52.
For every action _________, there is an equal but opposite reaction ________.
a)
force
b)
mass
53.
For every action _________, there is an equal but opposite reaction ________. This is which law?
a)
Newton's 3rd Law of Motion
b)
Newton's Law of Conservation of Motion
c)
energy
54.
As long as a net force is applied to any mass, it will continue to
a)
accelerate
b)
travel at constant velocity
55.
Orbiting objects stay in orbit because even though gravity is trying to pull them down, they have enough ___________ to keep falling but keep missing the object as they fall.
a)
velocity (speed)
b)
acceleration
56.
The people on the ISS are weightless because they are ___________
a)
in freefall toward the earth
b)
too far from Earth's gravity
57.
Accept during a period of acceleration, the only force operating on the ISS and any orbiting object, any type of satellite is
a)
gravity
b)
normal force
58.
The force of gravity toward the center of an orbit is called a ____________________force. It's like a more specific name of the gravitational force since it's
a)
Centripetal ("center-seeking") force
b)
Centrifugal
c)
fluid friction
59.
Even if a tiny mass like a bug hits a windshield of a large, fast vehicle, the forces are equal but there is a trade of between these two factors
a)
mass and acceleration
b)
mass and velocity
c)
propeller
60.
Even if a tiny mass like a bug hits a windshield of a large, fast vehicle, the forces are equal but the object with the least mass will receive the greater________________
a)
acceleration
b)
truck
61.
In Newton's 3rd Law of Motion the forces are equal but they are not being applied to the same object. They are being applied to the ___________ object.
a)
other (opposite)
b)
in the same direction
62.
A mass not moving has __________ but no ___________
a)
has inertia, but no momentum
b)
has weight but no inertia
c)
mass and force
63.
This is the equation/formula for this law
a)
Universal Law of Gravitation
b)
Law of Conservation of Momentum
c)
bug
64.
Big 'G' in this equation is the
a)
gravitational constant
b)
speed of light constant
c)
parallel
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