Physics 1134 Self Test
Isaac Newton
law of universal gravitation
The Dream
one of the first science fiction stories
Greek beliefs were based on human ...
reasoning
velocity
speed and direction
The longest time of flight occurs when a projectile is fired...
straight up
Nicolaus Copernicus
sun-centered theory
What is dynamics?
Dynamics is the study of the causes for the changes in motion
State Kepler's first law of planetary motion
Each planet moves about the sun in an elliptical orbit; the sun is at one focus of the ellipse
State Newton's first law of motion
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
State Newton's second law of motion
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
State Newton's third law of motion
When two bodies interact, the force exerted by the first body and opposite to the force exerted by the second body on the first
Why is Kepler's third law so helpful to astronomers
With it they could calculate the planet's distance from the sun
speed
average velocity x time
acceleration
change in velocity/change in time
Name four conic sections
circle, eclipse, parabola, hyperbola
A planet travels faster when it is ...
closer to the sun
Name the components of a projectile's motion
vertical , horizontal
average velocity
1/2 x final velocity
State Kepler's second law of planetary motion
A planet sweeps out equal areas of equal intervals of time as it orbits the sun
Right and wrong are determined by absolutes found in the ...
Bible
... proved that the planets travel in elliptical orbits
Johannes Kepler
What is kinematics?
Kinematics is the mathematical description of motion
Tycho Brahe
Prince of Astronomers
State Kepler's third law of planetary motion
The square of a planet's period is directly proportional to the cube of the distance from the sun
final velocity
acceleration x time
Distance is ... proportional to the square of time
directly
Two factors that are ... related are acceleration or force, while mass and acceleration are ... related
directly, inversely
distance
distance/time
Name three divisions of mechanics
dynamics, kinetics, statics
If you know the launch velocity and angle of a projectile, what three quantities can be calculated?
maximum height, range, time of flight
Galileo Galilei
natural motion in a straight line
elliptical
orbit of planets
What are two causes of projectile motion?
part of its motion is due to the velocity given to it at launch; part of its motion is due to the acceleration due to gravity
parabolic
path of a projectile
Gravity between two objects is directly proportional to ... and inversely proportional to ...
product of their masses, the square of the distance between their center's mass
Johannes Kepler
the three laws of planetary motion
