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Newton's and Kepler's Laws
Newton's and Kepler's Laws
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#Joslin #Mayo #Earth and Planetary Science
Flashcards
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Questions
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Answers
1
What force does a 5 kg rock have that is accelerating at 2 m/s
2
?
2.5 N
10 N
25 N
0.4 N
2
The force of the air on our skin is 14.7 pounds per square inch (PSI). This is an example of
momentum
pressure
volume
weight
3
Einstein said that gravity is actually a ____ in space-time.
bump
bend
hole
hill
4
The part of the orbit of a comet that is farthest from the sun is called the
foci
aphelion
perihelion
semi-minor axis
5
What is the impulse of a baseball thrown at 8 N going for 1 second?
1/8 N s
Trick question! There is no impulse.
1 N S
8 N s
6
What is the mass of a ball that was hit with 6 N force, and accelerates at 6 m/s
2
?
Not enough information given!
1 kg
36 kg
6.6 kg
7
The formula for momentum is p = ___ ?
mv
F / A
FT
ma
8
When two objects collide and bounce off each other it is called ___ ?
an inelastic collision.
an elastic collision.
Trick question! Objects never collide!
friction.
9
A feather are a rock are dropped from a bridge on Earth. Which one hits the ground first?
The feather hits first because it is lighter.
Trick question! They hit at the same time!
the rock because it is less affected by air
the rock because it has more mass
10
Friction
is between 2 moving objects.
comes from tiny bumps that slow an object's movement.
all of the above.
acts in the opposite direction of the movement.
11
The formula for Kepler's 3rd Law is
P3 = A2
P2 = A3
P2 = A2
P = A
12
The formula for Newton's 2nd law is
p = mv
F = ma
P = F/A
W = mg
13
What is the formula for Impulse?
mv
ma
FT
F / A
14
What is a black hole?
remains of a giant collapsed star
a lot of mass in a very small area
a really warped area of space-time where nothing can escape
All of the above
15
Compared to our Earth, most comets have a very ___ orbit.
perihelion
eccentric
aphelion
circular
16
If a planet is 1 AU away from the Sun, what is the period?
1 year
0.5 years
7 years
Not enough info for this,
17
A tennis ball and a bowling ball are dropped from a tower. Which one has greater force?
the tennis ball because it has more acceleration
the tennis ball because it has less mass
the bowling ball because it has more acceleration
the bowling ball because it has more mass
18
Newton's 3rd law says
for every action there is an opposite and equal reaction.
for every force jedi there is an opposite and equal sith.
for every action there is a reaction.
for every action there is an opposite reaction.
19
You accidentally crash your car. Which situation do you want most?
large time and large velocity
large time and little velocity
little time and large velocity
very little time and medium velocity.
20
A feather and rock are dropped from the top of a spaceship that has landed on the Moon.
The rock hits the ground first because more mass.
The feather hits the ground first because it's lighter.
They both hit the ground at the same time because same mass.
They both hit the ground at the same time because no air.
21
A woman shoots a gun. Which has the greater acceleration?
They both have the same acceleration.
the bullet
not enough information
the gun
22
When you walk, you push on the ground with your foot, and
the ground pushes a little less than your foot.
your foot is the only thing pushing.
the ground pushes back on your foot moving you forward.
the ground pushes in the same direction your foot is.
23
Which has more momentum, a 8 kg
truck
going 2 m/s , or a 4 kg
car
going 4 m/s ?
the truck
not enough information
the car
Trick question! They have the same momentum!
24
Kepler's second law says
Equal times are swept out in different areas.
nothing about orbits.
Equal areas are swept out in orbits in equal times.
Different areas are swept out in orbits in equal times.
25
An object at rest stays at rest and an object
in motion stays in motion forever.
at rest will move by action of inertia.
in motion stays at rest, unless acted upon by gravity.
in motion stays in motion, unless acted upon by a force.
26
What is this a drawing of?
flying saucer
eclipse
ellipse
circle
27
The part in a comet's orbit where it is closest to the sun is the
nadir
perihelion
aphelion
apogee
28
The plane in which all 8 of the planets orbit around the sun is called the
ellipse
ecliptic
sun disk
perihelion
29
Kepler's 3rd law relates together orbital
Astronomical units from Sun and years taken to orbit.
astronomical units and miles from the Sun.
period and distance from the Sun.
period and years to orbit the Sun.
30
Newton's 1st Law is also called the law of
force
acceleration
gravity
inertia
31
Kepler's first law of planetary motion says that all planets orbit in
an ellipse
a circle
a round year
a square
32
Pressure is defined as
force per area
velocity per time
force per time
time per area
33
What is the momentum of a 50 kg runner who runs 400 meters in 50 seconds?
2500 kg m/s
400 kg m/s
1,000,000 kg m/s
8 kg m/s
34
What is the evidence that there is a black hole in the center of our Milky Way galaxy?
We have pictures of it from our space probe sent there.
Trick question! There is no evidence of a black hole.
We can see stars, orbiting something we can't see.
The Russians told us there is one.
35
Most matter in space has gone through
impulse collisions.
inelastic collisions.
elastic collision.
ellipse collisions.
36
What is the unit for Force?
The Sith
The Jedi
The Newton
The Meter
37
If there was no Normal Force, what would happen to a book resting on the table?
The book would float away in the sky.
The book would start sliding along the table.
The book would fall straight to the center of the Earth.
Nothing would happen to the book.
38
There are two 1 kg rocks floating 1 m apart in space. What's the force of gravity between them?
3.1415 N
6.02 x 1023 N
Impossible to calculate
6.67 x 10-11 N
39
What is the acceleration of a 2 kg toy car if 4 N of force are applied to it?
16 m/s2
8 m/s2
2 m/s2
4 m/s2
