Question 1

Newton's law of gravitational force states that ____.

Accepted Answer

A)  an object with no force on acting on it continues at rest or moves in uniform motion in a straight line with constant velocity 
B)  an object with no force on it moves in a straight line with constant acceleration 
C)  for every action, there is an equal and opposite reaction 
D)  the force between two objects is directly proportional to the product of their masses and inversely proportional to the distance between them squared 
E)  an object with a force on it is accelerated in the direction of the force an amount inversely proportional to its mass and directly proportional to the size of the force 
A)  an object with no force on acting on it continues at rest or moves in uniform motion in a straight line with constant velocity 
B)  an object with no force on it moves in a straight line with constant acceleration 
C)  for every action, there is an equal and opposite reaction 
D)  the force between two objects is directly proportional to the product of their masses and inversely proportional to the distance between them squared 
E)  an object with a force on it is accelerated in the direction of the force an amount inversely proportional to its mass and directly proportional to the size of the force

Question 2

Perigee is the point in ____.

Accepted Answer

A)  the Moon's orbit when the Moon is farthest from Earth 
B)  an object's orbit around Earth when the object is closest to Earth 
C)  an object's orbit around Earth when the object is closest to the Sun 
D)  a planet's orbit when the planet is closest to its sun 
E)  a planet's orbit when the planet is farthest from its sun 
A)  the Moon's orbit when the Moon is farthest from Earth 
B)  an object's orbit around Earth when the object is closest to Earth 
C)  an object's orbit around Earth when the object is closest to the Sun 
D)  a planet's orbit when the planet is closest to its sun 
E)  a planet's orbit when the planet is farthest from its sun

Question 3

The importance of the general theory of relativity lies in its description of ____.

Accepted Answer

A)  acceleration 
B)  gravity 
C)  mass 
D)  space-time 
E)  velocity 
A)  acceleration 
B)  gravity 
C)  mass 
D)  space-time 
E)  velocity

Question 4

Define and distinguish among the terms speed, velocity, and acceleration.

Accepted Answer

Speed is the pace at which an object mov

Question 5

The second postulate of special relativity states that ____.

Accepted Answer

A)  observers cannot detect their uniform motion except relative to other objects 
B)  observers cannot distinguish locally between inertial forces and uniform gravitational forces due to acceleration and the presence of a massive body 
C)  the laws of physics are the same for all observers regardless of their motion as long as their speed is constant 
D)  the speed of light is constant and will be the same for all observers independent of their motion relative to the light source 
E)  the acceleration of an object is proportional to the applied force and inversely proportional to its mass 
A)  observers cannot detect their uniform motion except relative to other objects 
B)  observers cannot distinguish locally between inertial forces and uniform gravitational forces due to acceleration and the presence of a massive body 
C)  the laws of physics are the same for all observers regardless of their motion as long as their speed is constant 
D)  the speed of light is constant and will be the same for all observers independent of their motion relative to the light source 
E)  the acceleration of an object is proportional to the applied force and inversely proportional to its mass

Question 6

Special relativity states the relationship between energy and mass as   .

Accepted Answer

A) True 
 B)False

Question 7

Spring tides occur during the new and full lunar phases.

Accepted Answer

A) True 
 B)False

Question 8

The term _______________ refers to a change in velocity.

Accepted Answer

The answer of The term _______________ refers to a change...

Question 9

How did Aristotle describe gravity and in what context?

Accepted Answer

Aristotle believed that objects fall dow

Question 10

Aristotle believed that objects falling to the ground fall at a constant rate of speed.

Accepted Answer

A) True 
 B)False

Question 11

What is the escape velocity from the Moon for a lunar landing module sitting on the Moon's surface? Hints:   ;
The mass of the Moon is 7.2 × 1022 kg; its radius is 1738 km; G = 6.67  10-11 m3/s2/kg

Accepted Answer

A)  2.3 m/s 
B)  23 m/s 
C)  2.3 km/s 
D)  11 km/s 
E)  23 km/s 
A)  2.3 m/s 
B)  23 m/s 
C)  2.3 km/s 
D)  11 km/s 
E)  23 km/s

Question 12

How did Newton's Principia impact science?

Accepted Answer

After the  Principia was published, phys

Question 13

Why does the circular velocity of an Earth satellite depend on the distance from Earth's center?

Accepted Answer

The equation for circular velocity is as

Question 14

According to __________, _______________ motion occurs when natural motion has to be sustained by a force.

Accepted Answer

The answer of According to __________, _______________ motion occurs when...

Question 15

Galileo believed that motion stops in the absence of a force.

Accepted Answer

A) True 
 B)False

Question 16

Spring tides occur at ____.

Accepted Answer

A)  new moon and first quarter moon 
B)  new moon and full moon 
C)  first quarter moon and third quarter moon 
D)  first quarter moon and full moon 
E)  third quarter moon and full moon 
A)  new moon and first quarter moon 
B)  new moon and full moon 
C)  first quarter moon and third quarter moon 
D)  first quarter moon and full moon 
E)  third quarter moon and full moon

Exam 5: Gravity

Newton's law of gravitational force states that ____.

Perigee is the point in ____.

The importance of the general theory of relativity lies in its description of ____.

Define and distinguish among the terms speed, velocity, and acceleration.

The second postulate of special relativity states that ____.

Special relativity states the relationship between energy and mass as .

Spring tides occur during the new and full lunar phases.

The term _______________ refers to a change in velocity.

How did Aristotle describe gravity and in what context?

Aristotle believed that objects falling to the ground fall at a constant rate of speed.

What is the escape velocity from the Moon for a lunar landing module sitting on the Moon's surface? Hints: ; The mass of the Moon is 7.2 × 1022 kg; its radius is 1738 km; G = 6.67 10-11 m3/s2/kg

How did Newton's Principia impact science?

Why does the circular velocity of an Earth satellite depend on the distance from Earth's center?

According to __________, _______________ motion occurs when natural motion has to be sustained by a force.

Galileo believed that motion stops in the absence of a force.

Spring tides occur at ____.

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A Users Guide to the Sky

Moon Phases and Eclipses

Origins of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

Formation and Structure of Stars

Stellar Evolution

Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Supermassive Black Holes and Active Galaxies

Modern Cosmology

Origin of the Solar System and Extrasolar Planets

Earth the Active Planet

The Moon and Mercury

Venus and Mars

Jupiter and Saturn

Uranus Neptune Pluto and the Kuiper Belt

Meteorites Asteroids and Comets

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What is the escape velocity from the Moon for a lunar landing module sitting on the Moon's surface? Hints: ; The mass of the Moon is 7.2 × 10²² kg; its radius is 1738 km; G = 6.67 10^-11 m³/s²/kg

According to , _____ motion occurs when natural motion has to be sustained by a force.