# Physics Final

### 66 terms by Heather-Feather

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### what are the two basic elements of darwins theory of evolution?

common ancestry and natural selection

volume

force

kilogram

forces

### the acceleration produced by a net force on an object is...

directly proportional to magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object

the heavy person

### a tennis ball and a solid steel ball the same size are dropped at the same time. in the absence of air resistance, which ball has the greater acceleration?

they have the same acceleration

0 m/s2

inertia and mass

acceleration

### a push on a 1 kg brick accelerates the brick. neglecting friction, to equally accelerate...

with 10 times as much force

### the reason a tennis ball and a solid steel ball will accelerate at the same rate in the absence of air resistance is that..

the ball with the larger force also has the larger mass

it doubles

### two factors that greatly affect air resistance on falling objects are...

size and speed of the object

### using newtons second law, explain why the acceleration of two freely-falling objects having different masses is the same. Is the force on each mass the same?

The force on each mass is different because of the weight of the object. So the heavier object has a greater force. It goes though the air faster than the lighter object.

### what does neo-darwinism claim?

natural selection preserves and eliminates genes overtime and new genes are added by random mutation

### what does macroevolution mean?

large scale changes such as origin of body parts will mutate into new species

vector

scalar

resultant

### whenever there is an action force, there must be a reaction force which...

is exactly equal in magnitude

pairs

### as a ball falls, the action force is the pull of the earths mass on the ball. the reaction force is the...

pull of the balls mass on the earth

### what are examples of vector quantities?

velocity, acceleration, force

### which are scalar quantities?

mass, speed, volume

### Explain Newtons three laws and two points under each.

Law of inertia: if an object is in motion it would stay in motion, if its at rest it would stay at rest.The object will change unless acted by a net force
Law of Acceleration: when a net force acts on an object it will accelerate and acceleration is directly proportional to the net force and inversely proportional to the mass.
Law of action/reaction: when an object acts on the second object than the second object will give off equal and opposite force. Forces come in pairs one action and the other reaction making a interaction.

### Evolutionist point to changes in finches beaks during times of drought as evidence for evolution. Why is this claim unfounded?

an 18 yr study showed that beak changes reverted back to its original size when drought ended. Beak changes did not provide evidence of macroevolution

### Why are Haeckels drawings no longer considered valid arguments for evolution?

drawings are of mid stage not the earliest. Specimens were selected because of their similarities, and they were inaccurate representations of the information reported

### colliding objects become distorted, generate heat, and possible stick together

inelastic collision

### the momentum of a system remains unchanged

law of conservation of momentum

### colliding objects rebound without lasting deformation or the generation of heat

elastic collision

### difference between impulse and impact force involves the...

time the force acts

### impulse is equal to the...

change in momentum

momentum

### padded dashboards in cars are safer in an accident than nonpadded ones because an occupant hitting the dash has...

increased time of impact

newtons 2nd law

exhaust gases

energy

impulse

weight

### as in object falls downward its....

velocity increases

### what did the development of evolutionary theory in the 1800s provide?

an explanation of life without supernatural means

dna analysis

### a synthesis of a large body of information that encompasses well-tested and verified hypotheses about certain aspects of the natural world.

scientific theory

fact

pseudoscience

### science, art and religion do not contradict one another because...

all three have different domains

### Give an example of how a specific technology could be both helpful and harmful.

xrays because it shows you what is wrong with you but also because of the radiation it gives off.
Aspirin- it may make you feel slightly better, or it may just stay the same of it may make you worse

### example of pseudoscience and the real science it mimics

astrology and it mimics astronomy

### is a change of mind a sign of weakness or strength? how is this different in science?

its a sign of strength because you cant stick to the one idea that you have had and hoped for it to be true. you have to experiment with your ideas to get your results.

### what is the penalty for scientific fraud in the science community?

proffessional excommunication

### what has been the general reaction to new ideas about established truths?

resistance- people dont want to change their mind about it

### two categories of science and two examples

life and physical- life has zoology and botony..
physical has chemistry and biology

### three primary sciences. which is the most basic and why?

physics-study of motion, energy, light(etc) its the most basic because it is used as the building for all the other sciences.
Chemistry- study of chemicals and the way they react together.
Biology- study of not only plants but humans and the way things work

amino acids

### why was the miller urey experiment not a valid proof for chemical evolution?

it eliminated oxygen from the environment which interferred with the chemical reaction

net force

Copernicus

### law of inertia applies to

both moving and nonmoving objects

### How can newtons law of inertia be applied to an individual who has not been told about the lord?

the human heart is beating at a constant speed, it doesnt change, it doesnt slow down or speed up, its just right to keep us alive. this shows that we have a creator who made everything and everyone functioning just right in order to live. With Christ he will keep us going in a straight path and without him we will be off track.

bottom up

vector quantity

acceleration

speed

Example: