1134 Questions & Blanks

Question 1

Greek beliefs were based on _____________

Answer 1

human reasoning

Question 2

Right and wrong are determined by absolutes found in _________

Answer 2

the BIBLE

Question 3

Five things that Galileo Galilei discovered with his telescope

Answer 3

Mountains and craters on the moon
Venus has phases like the moon
Four large moons of Jupiter
Dark spots on the sun
Thousands of additional stars in the Milky Way

Question 4

How can we eliminate use of the term “deceleration”?

Answer 4

by referring to it as negative acceleration

Question 5

Mechanics is divided into what three parts?

Answer 5

Kinetics
Dynamics
Statics

Question 6

What is dynamics?

Answer 6

Dynamics is the study of the causes for change in motion

Question 7

What is kinematics?

Answer 7

Kinematics is the mathematical description of motion

Question 8

What is speed?

Answer 8

Speed is the rate at which an object covers distance

Question 9

__________ is a vector that has speed and direction

Answer 9

Velocity

Question 10

Distance is ________________ to the square of time

Answer 10

directly proportional

Question 11

average velocity is equal to

Answer 11

half of the final velocity

Question 12

final velocity F

Answer 12

acceleration x time

Question 13

velocity includes both ______________

Answer 13

speed and direction

Question 14

speed F

Answer 14

distance/time

Question 15

distance F

Answer 15

average velocity x time

Question 16

acceleration F

Answer 16

change in velocity/change in time

Question 17

time squared is ____________________

Answer 17

directly proportional to distance

Question 18

Formula for distance

Answer 18

(.5)(9.81m/s^2)(time^2)

Question 19

As soon as a projectile is launched, it begins to fall short of its ____________

Answer 19

straight-line path

Question 20

The two components of a projectile’s motion

Answer 20

vertical component

horizontal component

Question 21

A projectile follows a path called a

Answer 21

parabola

Question 22

The four conic sections

Answer 22

circle
ellipse
parabola
hyperbola

Question 23

If one cannonball is fired horizontally from a cliff at the same time that another cannonball is dropped from the cliff, what happens?

Answer 23

Both objects with strike the ground at the same time

Question 24

The formulas for the vertical and horizontal components of projectile motion

Answer 24

Vv = (v)(cos.theta)
Vh = (v)(sin.theta)

Question 25

The three quantities that can be calculated when dealing with projectiles if you know the launch velocity and angle of motion

Answer 25

maximum height range time of flight

Question 26

What is the maximum height of a projectile?

Answer 26

The maximum height is the greatest vertical distance reached by the projectile

Question 27

What is the range of a projectile?

Answer 27

The range is the horizontal distance from the launching point to the point of impact.

Question 28

What is the time of flight of a projectile?

Answer 28

The time of flight is the time elapsed from launch to impact.

Question 29

Newton's first law of motion

Answer 29

Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.

Question 30

What is mass?

Answer 30

Mass is a measure of an objects inertia

Question 31

What is the difference between mass and weight?

Answer 31

Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity acting on an object.

Question 32

Newton's second law of motion

Answer 32

The acceleration of a body is directly proportional to the resultant force acting on that body and inversely proportional to the mass of the body.

Question 33

Newton's second law of motion stated algebraically

Answer 33

a = F/m

Question 34

Two factors that are directly related are ________________________, while _______________________ are inversely related.

Answer 34

acceleration and force | mass and acceleration

Question 35

How do astronauts determine the mass of an object in weightless conditions of orbit?

Answer 35

Astronauts measure the object's inertia. They place the object on a compressed spring. When released, they measure its acceleration.

Question 36

Newton's third law of motion

Answer 36

When any two bodies interact, the force exerted by the first body on the second is equal and opposite to the force exerted by the second body on the first

Question 37

Formula for maximum height

Answer 37

(1/2)(Vv)(Vv/9.81)

Question 38

Formula for flight time

Answer 38

(2)(Vv/9.81)

Question 39

Formula for range

Answer 39

(Vh)(time)

Question 40

_____ deals with the position and motions of celestial bodies.

Answer 40

Astronomy

Question 41

What is an Ellipse?

Answer 41

An ellipse is a flattened circle with two centers called foci.

Question 42

________________ proved that planets travel in elliptical orbits

Answer 42

Johannes Kepler

Question 43

Kepler's first law of planetary motion

Answer 43

Each planet moves around the sun in an elliptical orbit; the sun is at one focus of the ellipse.

Question 44

Kepler's second law of planetary motion

Answer 44

A planet sweeps out equal areas in equal intervals of time as it orbits the sun.

Question 45

Kepler's third law of planetary motion

Answer 45

The square of a planet's period is directly proportional to the cube of its distance from the sun

Question 46

scientific study of the universe

Answer 46

astronomy

Question 47

Prince of astronomers

Answer 47

Tycho Brahe

Question 48

calculated G with a torsion balance

Answer 48

Henry Cavendish

Question 49

sun-centered theory

Answer 49

Nicolaus Copernicus

Question 50

three laws of planetary motion

Answer 50

Johannes Kepler

Question 51

three laws of motion

Answer 51

Isaac Newton

Question 52

The orbit of planets is ____________

Answer 52

elliptical

Question 53

The Dream

Answer 53

one of the first science fiction stories

Question 54

Why was Kepler's third law of planetary motion so helpful to astronomer's?

Answer 54

With the third law of planetary motion, astronomers could calculate the distance of the planets from the sun

Question 55

Galileo Galilei discovered that natural motion is motion in a __________

Answer 55

straight line

Question 56

What happens to the velocity of a planet as it orbits closer to the sun?

Answer 56

As a planet orbits closer to the sun, its velocity increases.

Question 57

Isaac Newton established the ________________ for gravity in 1666

Answer 57

inverse square law

Question 58

The mathematical formula for the law of universal gravitation is _________

Answer 58

F = (G)[(m1)(m2)/(r^2)]

Question 59

The force of attraction between two bodies is inversely proportional to _______________________ and directly proportional to _______________________.

Answer 59

the square of the distance separating their centers of mass | the product of their masses

Question 60

The longest time of flight occurs when a projectile is fired ___________

Answer 60

straight up

Question 61

What are the two causes of projectile motion?

Answer 61

Motion due to launch velocity and motion due to acceleration due to gravity are the two causes of projectile motion

Question 62

A planet travels fastest when it is nearest the sun

Answer 62

.

Question 63

Studied motion and mechanics

Answer 63

Galileo Galilei